Category Archives: science

BOOK REVIEW: Your Brain on Yoga by Sat Bir Khalsa

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Your Brain on YogaYour Brain on Yoga by Sat Bir Khalsa

My rating: 4 of 5 stars

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This Harvard Medical School Guide presents the findings of many scientific studies on the benefits of yoga, and it does so in a manner suitable for the layman. The book is written by Dr. Sat Bir Khalsa, a long time practitioner of Kundalini Yoga and a neuroscience researcher at Harvard, and is co-authored by a science writer trained in journalism.

I became aware of Khalsa’s work when reading William Broad’s The Science of Yoga, a book that is complimentary of Dr. Khalsa and his studies—a favor which Khalsa doesn’t return as he rejects Broad’s work as being overly sensationalist. The book does talk about Khalsa’s research, such as a study with young musicians at Tanglewood that examined how the practice of yoga increased their equanimity. That said, this isn’t merely a summation of Dr. Khalsa’s work. It’s what in academia would be called a literature review, but “literature review” implies a far more dismal reading experience than one gets from this book. It does present anecdotes in a way that is useful for a layman’s book, but would not be well-respected in an academic setting. This work isn’t designed for medical colleagues but rather to be of benefit to run-of-the-mill yoga students and teachers.

This is a very short book at only about 50 pages. The book consists of five chapters after an introduction which sets the stage and gives some relevant background on Dr. Khalsa. Chapter one delves into the effect of stress on the body and mind, and how yoga (and meditation more generally) has been shown to help counter the effects of bad stress (not all stress is inherently bad, as is addressed in the chapter.) Chapter two examines the effect of yoga on the body and in countering a number of common ailments. The third chapter considers how yoga might actually help one to be smarter and more creative. Chapter four presents the results of studies of how yoga can counter depression and improve one’s mood. Chapter five is in a different vein, and might well have been included as an appendix. The last chapter gives an overview of the various types of yoga to assist readers new to yoga on what style might best meet their needs and disposition. This is a nice feature for those new to yoga, but also for veteran practitioners who’ve practiced one style and might not be aware of the wide range of styles out there. (A few of the styles mentioned are popular in India, but I don’t think are as well-known in the West.)

For such a thin book, this work covers a wide range of topics including–but not limited to–the effects of yoga on sleep, the immune system, neural plasticity, memory, math skills, and mood. A nice feature of the book is a series of brief exercises that one can practice to help reduce stress or achieve a desired goal. These practices are generally located at the end of chapters. Finally, while this book isn’t written primarily for doctors and other scientists, it’s endnoted so those interested in tracking down the studies the book references can readily do so.

I’m a big fan of applying a scientific approach to the study of ancient methods such as yoga. I would, therefore, recommend this book for yoga teachers and students who are interested how precisely these practices can assist them. It’s extremely short and easily digested. It’s in no way overbearing with medical jargon and is readily understood by anyone with a basic education in biological science.

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BOOK REVIEW: Flow by Mihaly Csikszentmihalyi

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Flow: The Psychology of Optimal ExperienceFlow: The Psychology of Optimal Experience by Mihaly Csikszentmihalyi

My rating: 4 of 5 stars

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Recently, I read and reviewed Steven Kotler’s The Rise of Superman, which is about how extreme athletes use a mental state called “the flow” to pull off some miraculous feats (e.g. “hanging righteous air” to use an appropriate term of art.) That book got me intrigued about the flow, and wanting to learn more. The logical next read was the book by the man considered the godfather of flow, the man who coined the term, Mihaly Csikszentmihalyi. Csikszentmihalyi is a Professor of Psychology at the Claremont Graduate University and formerly of the University of Chicago.

A Note on Editions: The book I read is the 2013 edition of a book that was first published in 1990. The two editions have different subtitles. The 1990 edition was entitled Flow: The Psychology of Optimal Experience and the 2013 edition is Flow: The Psychology of Happiness. It’s not hard to imagine what happened. The 1990 version was titled to appeal to scholars, and the former title both has more syllables and suggests that one might be able to use LaGrangian Methods (the calculus of constrained optimization) to maximize bliss—which would be double bliss for an academic. As Csikszentmihalyi’s work attracted widespread attention, there was a need for a title that didn’t sound painfully dull. To be fair, the word “happiness” has gained some purchase in scholarly literature in recent years, but in 1990 saying one was studying “happiness” would be akin to saying one would study the “cuddliness quotient” of kittens (actually the latter, having the word “quotient” in it, would test better with department chairs and funders.)

Flow is a state in which one’s entire mind and body is devoted to overcoming a challenge that is intrinsically rewarding. There’s a lot packed into that definition. First, the task must be difficult but within the skill-level of the individual. If it’s too easy, it’s too boring for flow. If it’s far too challenging relative to one’s skill, it may become frustrating before one can build enough skill to achieve it. Flow states can be achieved via many different kinds of tasks, and the middle chapters of the book are devoted to different types of flow-inducing events. Chapters 5 through 8 address, respectively: physical activities like yoga and the martial arts, mental activities like poetry, word play, and chess, work activities, and solitude and social activities.

Second, tasks must usually be autotelic, or intrinsically rewarding. If the only reason that one is doing an activity is for a paycheck, to stave off nagging, or to attract attention, one will be unlikely to find the flow. That doesn’t mean that one can’t receive external rewards, but the activity has to have something intrinsic that keeps one at it. Csikszentmihalyi’s approach was to interview people to access how happy they were, and what activities allowed them to achieve said happiness. He shares many anecdotes about individuals who were blissful, including people who derived happiness from work activities such as factory work, work that most people would find unpleasant and only tolerable to earn a living. Of course, these happy individuals didn’t just do the job in the manner of the poor schlubs who hated their work-life. Instead, they found ways to make the work challenging and, in doing so, they often made themselves indispensable and gained not only job security but also the respect and admiration of others. What is key is that one’s mindset determines all of this, and the book focuses on the notion of controlling one’s inner life to achieve happiness via the flow.

Third, flow is not achieved in a distracted state; all of one’s being has to be surrendered to the act at hand. Multi-tasking is not conducive to the flow.

The ability to override one’s evolutionarily-programmed instincts is key to being able to obtain a flow state. One must be able to stay on task and devote one’s consciousness to the action at hand. This is the central theme in chapter 2, entitled “The Anatomy of Consciousness.” The book also speaks to a subject that I’m currently interested in, which is how states of mind and body that have been known since ancient times, but whose mechanism of action weren’t well-understood, are explained in the world of modern science. Csikszentmihalyi refers to yogis and Taoist masters as he describes the flow. Flow state isn’t new; it’s just newly put in the context of science, rather than mythology.

I enjoyed this book and found the chapter on the flow in movement and bodily activities particularly educational. Csikszentmihalyi has written a few related books on creativity and the flow applied specifically to sport. I would like to learn more about the neuro-anatomy and neurochemistry of the flow, as this book doesn’t delve into the hard science of the flow, and much of this science has occurred since the time this book was first published anyway.

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BOOK REVIEW: The Future of the Mind by Michio Kaku

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The Future of the Mind: The Scientific Quest to Understand, Enhance, and Empower the MindThe Future of the Mind: The Scientific Quest to Understand, Enhance, and Empower the Mind

by Michio Kaku

My rating: 4 of 5 stars Amazon page

The Future of the Mind continues a line of inquiry that Michio Kaku has been following with his earlier books Physics of the Impossible and Physics of the Future. The central question remains: what sci-fi imaginings might come to fruition, which of them are impossible given the laws of physics in the known universe, and what breakthroughs or discoveries would be necessary to achieve the achievable. Technology is the inevitable gateway to these advanced breakthroughs. Humanity has eliminated gross evolutionary pressures through technology—this might not remain true, but we can certainly not expect X-men style mutations as a result of the foreseeable progression of humanity (which is more likely to be described by the horrible—though probably presagious 2006 movie Idiocracy than it is by the X-men movies.)

The theme of the book, as the title suggests, is the mind. As the most complex system that we know of, the human nervous system offers fertile ground for investigation. Among the sci-fi mainstays considered by Dr. Kaku are telepathy, telekinesis, false memories (think Total Recall), intelligence enhancement, mind control, artificial intelligence, and the nature of alien minds. Along the way he considers the challenges of reverse engineering the brain and whether consciousness could take a non-material form (e.g. embedded in a beam of light.)

As always, Kaku’s book is easy to follow, even for the scientific neophyte. Few others write on the topic with such clarity. While part of Kaku’s book deals with the same concepts covered by Roger Penrose in his book Shadows of the Mind, the Kaku book scores much higher in readability. Of course, the flipside is that Kaku’s book offers less explanatory power. So if one isn’t looking for pop science simplification, The Future of the Mind is probably not for you. However, if you want the jist of the science and have neither the background nor the energy to digest the mathematical and biological nuance, you’ll find this book readable.

Incidentally, Kaku is more optimistic about the ability to computationally replicate consciousness than Penrose, which the latter argues is impossible. Professor Kaku’s optimism runs through all of his books. He takes the stance that if one can imagine it–and figure out a technological or theoretical loophole around the known barriers –one can achieve it. Therefore, some of his discussion of what could come to pass depends upon theories about, for example, black-holes being true. It should be noted that Kaku is quite clear about the differences of opinion that exist about these theories and the role that differences between theory and reality could play in making science fiction into scientific reality.

I enjoyed this book. I’ve been reading a lot about neuroscience lately—entirely on the pop science level- and found this book to be beneficial to my understanding of the subject. It begins by discussing what is known about the brain and consciousness—it turns out that a lot remains unknown, but the technology of recent years has vastly improved our understanding of the brain, and it continues to do so by the day. The book also delves into the depths of what could come to be. There is definitely pragmatic understanding to be gained as well as outlandish, but fun, science fiction ruminations.

For sci-fi fans and writers, it’s definitely worth reading. I had many new conceptions of the future as I read the book. (I might suggest reading Physics of the Impossible first, which gives an overview many “impossible” technologies and explains how few are just flat impossible regardless of technological development and scientific discovery. My review of that book is here.) Many of the ideas covered may seem a bit eccentric, such as what first contact with an alien race would look like. (Kaku is of the notion that the transmission of an immaterial consciousness(es), possibly in conjunction with self-replicating machines would be the likely shape of such an alien presence.)

I recommend this book for almost anyone. We are really only beginning to venture out of the dark ages understanding the mind, and this book provides an interesting map what might be possible.

As I mentioned it, sadly, this may be the more likely future of the human mind:

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BOOK REVIEW: The Rise of Superman by Steven Kotler

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The Rise of Superman: Decoding the Science of Ultimate Human PerformanceThe Rise of Superman: Decoding the Science of Ultimate Human Performance by Steven Kotler

My rating: 5 of 5 stars

Amazon page

This is NOT a book about the comic book hero. It’s a book about a mental state called “the flow” and how adventure and extreme athletes have used it to make tremendous strides in their sports. The characteristics of the flow include extreme focus, time dilation / time distortion, a vanishing sense of self, extremely high performance, fearlessness, and a falling away of everything non-essential to the task at hand.

Kotler is by no means the first author to write about the flow. The term was inaugurated by a book entitled Flow first published in 1990 by a University of Chicago Psychology professor named Mihaly Csikszentmihalyi. Csikszentmihalyi coined the term in the process of conducting a study on happiness. He found that happy people tended to engage in activities in which they could immerse themselves and find the zone. Contrary to the early part of Kotler’s book–in which it sounds like adventure athletes cornered the market on flow–Csikszentmihalyi says that said activity could be work or hobby and that the flow is to be found in poetry writing, yoga, martial arts, copy writing, or potentially any activity in which the skill level and challenge are both high.

(To be fair, Kotler does get around to recognizing that extreme athletes neither invented nor exclusively exploit the flow. However, his—well-taken—point is that such athletes are unusually good at finding, and dropping deep into, the flow in part because risk-taking behavior is an important trigger. And for free climbers [rock climbers without ropes], mega-ramp skateboarders, and bodysuit skydivers sometimes there are only two possible states of existence—the flow and being scraped off a rock.) It should be noted that some of the elements of flow sound a lot like the states that have been described by various mystical religious traditions for centuries, e.g. the dissolution of a feeling of separation between self and the rest of the universe. Warning: religious readers may find it disconcerting to read that there are scientific explanations for states that were once attributed to communion with god or the like.

While I’ve given Kotler’s book high rating, I haven’t yet given one reason to read it—and I do recommend people read it. First, while Csikszentmihalyi is the “father” of flow research, his methods were decidedly low tech–i.e. surveys and interviews—but Kotler reports on more recent studies involving neuroanatomy, neuroelectricity, and neurochemistry. Second, while Kotler delves into the science of the flow, he does so in a manner that is approachable to non-scientists. Finally, all of the narrative accounts of extreme athletes interspersed with the more technical commentary make for a very readable book, even if one is not particularly knowledgeable of—or interested in—such sports. I gave this book a high rating both for its food-for-thought value, and because of its high readability.

I will admit that I was not so enamored of the book when I first began it, and other readers may find the same irritation. For one thing, Kotler’s adoration of extreme athletes comes off sounding like diminishment of mainstream athletes and others involved in “flowy” activities. A prime example of this is seen in Chapter 1. Kotler gives us an endearing description of how gymnast Kerri Strug won the gold in the 1996 Olympics by sticking a landing on a shattered ankle. However, he then comes off a bit douchey when he suggests that Strug’s achievement pales in comparison to Danny Way’s skateboard jumps at the Great Wall of China.

For another thing, in his zealousness to prove that extreme sports practitioners are full-awesome while mainstream athletes are “meh,” Kotler makes some comparisons that seem apples and oranges to a neophyte such as me. If they are fair comparisons, he certainly doesn’t explain why they should be considered so. The best example of this is when he states that Olympic divers took decades to achieve increases in rotation that extreme skiers and skateboarders surpassed in much less time. This seems unreasonable for two reasons. First, divers have a very standard distance in which to achieve their acrobatics. In other words, they don’t get to build a “mega-platform” that’s 50% taller like Danny Way creates “mega-ramps” that were bigger than ever before. Of course, if you can increase the distance between yourself and the ground you can increase your spins, rotations, or whatever much more quickly (yes, your danger goes up vastly, I’m not diminishing that.) Second, the divers gained zero advantage from technological improvements, but the same cannot be said for skiers and skateboarders. In other words, if you go from skis made of oak to ones made of carbon nanotubes (that are 50 times stronger and 1/100th of the weight) of course you’re going to make gains faster.

Perhaps, I’m overstating Kotler’s disdain for mainstream athletics, but that’s what happens when one uses a national hero as a set up to show how much more awesome a relatively unknown skateboarder is (among skateboarders Way is extremely well-known but he’s not a household name as the Olympian was–at least for a short time in the late 90’s.) I suspect that Kotler was just trying to convince a general audience that the athletes he’s speaking about aren’t pot-smoking knuckleheads who are as likely to be seen on America’s Funniest Home Videos crushing their nads on a handrail as setting a new world record. These men and women are serious people engaged in serious activities, and they give it their all. They do deserve more respect for that than they are probably given by broad sectors of the populace. Perhaps, the importance of what these folks are achieving does need to be conveyed because the demographic that reads books and the one that follows extreme sports probably has wide wings of non-overlapping area. (I’m not saying skateboarders are illiterate or bookworms don’t skate–just that the Venn diagram has substantial areas of mutual exclusivity.)

As I indicated above, in each chapter we get both some insight into the nature of the flow and its triggers and stories of adventure / extreme athletes that serve as examples of what’s being discussed. In chapter 2 we learn what the flow looks like in terms of brain waves (i.e. high theta/low alpha, or between meditation and a relaxed / resting state of wakefulness.) In chapter 3, we learn about the neuroanatomy of the flow in terms of what areas of the brain it lights up, and what areas shut down–which is more important to flow states. In chapter 4, we learn about the neurochemistry of the flow and that a cocktail of dopamine, norepinephrine, endorphins, anandamide, and serotonin makes up the chemistry of flow, but, critically, not so much with the adrenaline. The subsequent chapters deal with triggers of the flow, and what conditions best set up achievement of this state of mind.

Chapter 9 stands out as an important, but quite different, portion of the book. It deals with the downside (or dark side) of the flow. This has a lot to do with the fact that the aforementioned internal substances (and the flow state in general) are quite addictive. While it’s unfair to say, and unlikely, that the extreme athletes Kotler writes about (i.e. the ones at the top of their games) are drug addicts as some might assume of skate boarders, snow boarders, and the like, it may not be unreasonable to say that they have a kind of monkey on their backs—albeit a perfectly legal one rooted in their own neurochemistry.

As I’ve said, I recommend this book for anyone who is interested in this state of mind. One needn’t be interested in extreme sports to get a lot out of the book.

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BOOK REVIEW: The Wild Life of Our Bodies by Rob Dunn

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The Wild Life of Our Bodies: Predators, Parasites, and Partners That Shape Who We Are TodayThe Wild Life of Our Bodies: Predators, Parasites, and Partners That Shape Who We Are Today by Rob Dunn

My rating: 4 of 5 stars

Amazon page

Dunn’s book addresses a host of intriguing questions such as:

-Why are there diseases that disproportionately attack those in the richest parts of the world while being almost non-existent in poor countries?
-Why is obesity at epidemic proportions among modern humans?
-Why—while people have diverse tastes overall—do there seem to be universal preferences for sweet, salty, and fatty foods?
-Why are so many people’s lives wrecked by constant stress and worry?
-Is the Appendix really a vestigial organ with no apparent purpose?

As the subtitle suggests, this book is about the role that other species have played in human evolution and the way we look, behave, and think today. The message of The Wild Life of Our Bodies is that humanity’s proclivity to see itself as an island–uninfluenced by other species–has its cost.

The book is popular science–approachable to a layman but with the usual disdain for gratuitous assertions and shoddy reasoning that define the scientific though process. That being said, Dunn does put some editorial opinion out there in ways that might appear as fact in a slipshod reading. The most prominent example being Dunn’s suggesting that what best defines humanity is not our intelligence or ability for abstract representation (or even our physical appearance), but that we are the only (first?) species that has killed other species off not purely of self-defense or for food, but to exercise control over our ecosystem. I doubt this would strike a majority of impartial scientists as a fair and unbiased way to define humanity. Granted, this point not what The Wild Life of Our Bodies is about, and whether one thinks this it is fair or not is not critical to whether one will find the book to be of value. However, the idea (and the fact) that humans have zealously killed off other creatures is certainly relevant to the discussion at hand.

If “terraforming” is the term for how an alien race might environmentally engineer Earth to make it suitable for them to live here, perhaps we could call humanity’s assault on other species “bio-forming” of the planet—choosing a roster of species that strikes our fancy. All the time humans were trying to make ourselves more comfortable by getting rid of inconvenient species, we remained ignorant to the downside.

Dunn covers a broad range of mismatches between who we are evolutionarily and how we live in the modern world. The Wild Life of Our Bodies suggests that, like the pronghorn antelope, humans are in many cases over-designed because of the loss of species (parasites, predators, symbiotes, etc.) that helped to make us who we are today. (One question that once puzzled biologists was why pronghorns were so much faster than every species they faced.)

While it sounds good to be over-designed (at least relative to the alternative), it’s not without cost. In our case, we had guts that were supremely adapted to having parasites, but the lightning fast (on an evolutionary timescale) elimination of those parasites has left us with bodies that attack a non-existent enemy and this has resulted in a number of new diseases. We are used to diseases that succeed in the poorest—and, hence, least hygienic areas– but disease that mostly attacked in the cleanest places on Earth have puzzled us for some time. Crohn’s disease is a prime example. “Rewilding” (i.e. putting parasites back into) the guts of Crohn’s patients has shown positive results.

Dunn lays out a couple of the theories as to how the loss of our intestinal bacteria may result in a number of first-world ailments. Interestingly, some of these diseases aren’t even digestive in nature, and might seem to have no logical connection to gut bacteria. However, our body’s systems are a system-of-systems—i.e. they are integrally linked. One issue is that some parasites have been able to mask their presence, and our bodies have learned to present a heightened response to account for this veiled threat. Today our systems can’t tell the difference between our squeaky clean guts and a gut full of these sneaking parasites so it drops the immune system version of an A-bomb.

This is one example of why some diseases don’t exist in the third-world where the body knows what parasites it’s up against. One might say, “Yes, but these ailments of over-reactive systems can’t be as bad as the effects of the parasites.” That’s often not true. Most people with internal bugs (we all have them to some degree), don’t even realize it. The fact that people with Crohns’ are willing to have predators implanted in them speaks to this issue.

There has been concern for years about downside of the rampant use of anti-bacterials, antibiotics, and antiseptics, and this is a topic Dunn addresses as well. For example, there seems to be little evidence that such agents in soap do any particular good, but they decidedly do bad (encouraging drug resistant species.)

Perhaps the single greatest change in the nature of homo sapiens life resulted from the agricultural revolution, and Dunn delves into how this seminal event changed our bodies. With paleo-dieting all the rage, it will come as no surprise that there have been some major changes to the human diet since our hunter-gatherer ancestors roamed the Earth. Once again, we have bodies built on an evolutionary timescale, and they don’t necessarily cope well with our new diets.

One problem is that we have strong hardwired drives for foods that were a rarity in our species’ past, but which we now produce in abundance. For example, we eat far too much refined sugar because our bodies are wired to love sweet, but that kind of food was rare to our pre-agricultural ancestors. Hence we have the existence of diabetes, and its greater prevalence where high-sugar diets are common. Many people are also saddled with an evolutionary advantage to store fat because their ancestors come from a clime where food was not abundant year round. The problem is that now there’s a grocery store on every corner and this once great advantage is contributing to burgeoning waistlines.

I gave this book a high rating on the grounds that it presented a lot of food for thought, and that’s what I most value in non-fiction. Some of the theories may turn out to be incorrect, but this book offers one a lot to think about and clear explanations of the bases for what can otherwise seem a little outlandish. There is also some wit in places that contributes to heightened readability.

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Paleo-Stressing: Acute v. Chronic Stress

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"What happened to the good ole days when I ate you people--not lived in your cages?"

“What happened to the good ole days when I ate you people–not lived in your cages?”

Paleolithic dieting is all the rage these days. I’m no expert on the paleo-diet, but–as I understand it–this refers to the practice of eating the foods consumed by our pre-agrarian ancestors. The idea is that if one consumes the foods that our species is evolutionarily-optimized to eating, one will be healthier.  Whether one believes in the merits of the paleo-diet or not on the whole, it’s hard to argue that one wouldn’t be better off eating less highly-processed and highly-refined foods and more things that look like food at a glance.

 

Our diet isn’t all that has changed since the days of our pre-agrarian ancestors. Modernity has brought with it an entirely new way of experiencing stress. Eliminating or reducing stress is a common topic of discussion, but not all stress is created equal. There’s a necessary form of stress, a stress that makes one better, stronger, faster, and smarter. We don’t want to willy-nilly eliminate stress; we want to reduce the wrong type of stress.

 

Our ancestors—like animals–experienced brief periods of intense stress (e.g. saber-tooth tiger attacks), followed by longer periods in which they were free of deadlines, carpools, and after-school activities. Now, no one likes to have a saber-tooth tiger stalking them. It’s unpleasant. Modern humanity has gone to great lengths to eliminate those short bursts of terror, but not without cost. (If you don’t believe me read Robert Sapolsky’s Why Zebras Don’t Get Ulcers.)

 

Whether or not you believe that eliminating acute instances of terrifying stress is bad for mankind, it’s hard to argue that modernity’s leveling process didn’t eliminate stress, but instead resulted in a chronic stress on a smaller scale. People today have impossibly long daily to-do lists, and they have to accept trade-offs between work, family, and personal development.

 

It’s true that you don’t get eaten by a giant cat when you drop the ball, but life is so packed diverse events that one may feel like one is dropping some ball constantly. If your boss thinks you’re a model employee, then your kids are probably going to need therapy. If you have a contented home life, your boss may have his or her eyes open for someone who can give the firm consistently 70+ hour work weeks. If you feel you’re doing alright on both the work and family front, your body and / or mind is probably a train wreck.

 

Chronic [mini] stress may feel better than acute [catastrophic] stress, but it takes its tolls in various ways. First, with our sympathetic nervous system (fight-or-flight reaction) constantly engaged our body’s power to heal itself is reduced. When the parasympathetic nervous system is engaged, the body devotes resources to long-term goals like getting healthier, but in stress mode activities not relevant to immediate survival shut down. This is a great system if you have periodic life and death stress, but is not so good if you’re under constant stress.

 

Second, chronic stress reduces sleep, and sleep is essential to one’s mental and physical well-being. There are a wide variety of symptoms associated with sleep deprivation such as forgetfulness, decreased concentration, decreased alertness, reduced reasoning ability, diminished problem-solving capacity, and depression—all of which can diminish our physical health through accidents, ailments, suicide attempts, and lack of energy for exercise.

 

Third, chronic stress can make one fat, with all the health issues that result. Some people use food as a coping mechanism. Other people eat too fast or choose their food poorly because of time constraints or because they are not mindful of eating as their monkey minds churn at a mile a minute. Then there is the more convoluted and complex issue of cortisol–a hormone released under stress that is linked to weight gain in at least some cases. Even if you don’t have a problem on the calorie intake side, the stressed individual may not do so well on the calorie burning side—either because of a lack of time to exercise or a lack of energy.

 

Modern humans are uniquely suited to chronic stress because we are the only species that achieves the same physiological stress response by remembering and obsessing about a stressful event as experiencing it. Abandoning the modern approach to living isn’t an option most are willing to entertain; but there are ways to combat chronic stress.

 

Move – Meditate – Mindfully Breath: The bad news is you’ve got to shoehorn these activities into your schedule daily (or at least several times a week.) The good news is that they don’t need to take up a lot of your day. There are a number of systems that address all three components in one handy package such as Qi Gong, Yoga, and some martial arts. I don’t think it matters so much which one chooses as how one goes about one’s practice.

 

Movement strengthens and strategically stresses the body, but it also increases one’s bodily awareness so that one becomes aware of how stress is manifesting itself in one’s body. Meditation teaches one how to live in the present moment, and it trains one to recognize the seeds of negative thought and emotion earlier so that one can counter-act them. Obviously, breathing is essential to life, but learning to be aware of one’s breathing patterns and to “manually override” the breath patterns associated with harmful emotional states is a beneficial skill.

 

Massage / Bodywork: Whether self-administered or other-administered (the latter allowing greater distressing–particularly if the masseuse is skilled) massage is an activity, like movement, that can help one become aware of where one is physically holding one’s stress. These physical manifestations of stress can exacerbate the whole experience of stress. One should take time periodically to have bodywork done. A day rarely goes by in which I don’t work on my own neck, shoulders, head, or face, and I occasionally get professional Thai Yoga Bodywork done.

 

The Places that Scare You: Force yourself to go someplace (not necessarily literally a “place”) that scares you once in a while. This needn’t be skydiving or hand-gliding—but it could be. It may be a martial arts class in which one has to put on the gloves occasionally and go at it. It may be joining Tostmasters and having to give a speech in front of a crowd. It may be traveling to some backwater where you don’t know the language, but you want to learn. This is a very personal issue. (i.e. A Type-A personality he-man may not find that skydiving is outside his comfort zone. If so, sorry, skydiving doesn’t count, he may need to learn ballroom dancing, or something else that truly takes him outside being comfortable.) KEY POINT: The problem with hiding from all stressors is that it doesn’t result in a stress-free life, what happens is that smaller and smaller stressors loom bigger and bigger in one’s mind. Which brings us to…

 

Perspective:  One must put life’s challenges in perspective. Each person’s problems are important to them, and I don’t want to diminish anyone’s problems, but—come on—you’re not going to be eaten by a freaking saber-tooth tiger.

BOOK REVIEW: The Science of Yoga by William Broad

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The Science of Yoga: The Risks and the RewardsThe Science of Yoga: The Risks and the Rewards by William J. Broad

My rating: 3 of 5 stars

I brought a great deal of interest and enthusiasm towards this subject as I began reading this book. As I proceeded to read, my feelings about The Science of Yoga became much more mixed. At its best, the book shows the state of scientific research on yoga and crushes myths that are deeply ingrained, and it points out risks of which yogis and yoginis should take notice. At its worst, it is sensationalism run-amok–suggesting hugely expensive solutions to issues that are either relatively small problems or that the author fails to prove are really problems at all. Put more simply, at its best it’s outstanding, but at its worst it’s tripe. What I will say about this book is the same thing that its author says about yoga, which is that—on balance—it does more good than harm.

The book is arranged into seven chapters, each of which discusses the scientific research on a different dimension of controversial beliefs about yoga. These include the historic claims of supernatural yogic abilities, the issue of whether yoga increases cardiovascular health, the role of yoga in mental health and well-being, the safety of practicing yoga, the role of yoga in healing, the sexual claims of yogis, and whether yoga enhances creativity. It is written in a scholarly format, heavily end-noted and with bibliographic citations. There is front matter giving information about key people, time lines, and yoga styles in outline form.

In an afterword, Broad points out that this has been his most controversial book to date. I can see why, but, to be fair, I’m sure much of the criticism is unfairly based on a failure to read the book or a desire for the author to treat many of yoga’s mythical aspects as science (as many of its practitioners do.) The former problem was exacerbated by the fact that a single chapter excerpt was published in the New York Times as a teaser for the book. Designed to spark controversy (always good for readership), it was one of the most negative of chapters—the one dealing with yoga injuries. Some who took umbrage probably didn’t realize that Broad is a yoga practitioner, and that there are chapters that are overwhelmingly positive on yoga (e.g. the chapter on “mood” which deals with yoga’s influence on psychology has mostly great things to say about the discipline.) While all of the chapters combine a mix of good and bad news, one comes away from some of them seeing a positive picture of yoga and others with a negative one. In the first half of the book it seems as though chapters may have been arranged to alternate positive and negative dimensions.

Of course, there will also be people who are outraged because of the discussions of the debunking of the con games of their beloved yogis, or for a failure to discuss the critical importance of things like Chakra fluffing. It should be noted that Broad doesn’t deride or mock such spiritual beliefs, he more or less ignores them beyond the occasional off-hand mention—as one would expect in a book about science.

My primary criticism with The Science of Yoga is a common one consideration of problem-solving utilizing public policy (not just with respect to yoga), which is to become so impassioned about a problem that you lose all sight of cost-benefit considerations or the negative feedback effects incentivized by your “solutions.” The problems about which Broad gets so exercised as to suggest an overhaul of yoga as we know it, largely fall into two categories. First, there are problems that are exceedingly rare but catastrophic for in individual involved. This is exemplified by the apparent heightened incidence of strokes among individuals engaged in certain inversions (e.g. a shoulder stand in which the neck is under compression.)

In an interesting turn away from science, Broad makes assumptions in the face of lack of evidence about the incidence of stroke in yoga practitioners. He assumes that yogis have at least the same incidence of stroke due to vertebral artery injury as the general population because of inversions and other yogic activities that put pressure on blood vessels in the neck. He does make clear that it’s just a guess, but one could equally well speculate that those who practice yoga suffer a diminished rate of such strokes because of greater flexibility and strength in the neck. (For the most part the human body is an anti-fragile system, i.e. it grows stronger when subjected to stresses—up to a point—than when shielded from stresses.) While he does call for increased study of the issue, he’s also simultaneously calling for expensive reforms. In essence, he’s calling for a solution before awaiting the evidence that there’s actually a real problem. Stroke is the 800 pound gorilla of the risks the Broad writes about in terms of damage, and so it’s not surprising that he paints the risk in ominous terms. He criticizes the Yoga Journal for dismissing it as a “minuscule number of cases”, but even taking his estimate of 300 (and realizing it could be much lower and is compared to 800,000 cases of stroke per year in the US according to the CDC) “minuscule” does not sound that out of line in a country of 314 million people.

Second, there is the issue of bad information being spread by yoga teachers and authors either because they don’t know any better or because they have an incentive to deceive. This is exemplified by the widespread notion that yoga (and particularly pranayama— breathing exercises) increases one’s cardiovascular fitness. Is it wrong? Yes, but it’s not clear that this propagation of bad information has hurt anybody. That may sound harsh, but—think about it–many people lead long and fruitful lives believing things that aren’t true. Now you may say, “Yes, but people who believe the Earth is flat can’t get hurt believing that, but yoga practitioners can be hurt by wrong information.” I would agree that some wrong information could be damaging, but consider the example given, which–I might add–is one of the main thrusts of Broad’s book. If it were the case that many people got fat because they thought yoga would help their cardio when instead it decreased their metabolism (as the evidence suggests it does), then no one would believe the myth. The idea wouldn’t have the strong hold that it does. What happens more often is that people either lose weight because they stress and eat less or they stay the same—either way they haven’t been hurt any more by bad information. Even if someone came to yoga to lose weight and gained some, they will abandon yoga and go to Zumba or Taebo with greater flexibility and probably a diminished risk of injury for having done yoga.

By spreading information about the risks and the state of scientific understanding of them Broad is doing good work. However, he goes on to suggest that we need lots of bureaucrats to monitor and license yoga and that we need much more rigorous requirements for yoga teachers than the 200 or 500 hour Yoga Alliance certifications that currently exist (or the teaching certificates issued by the gurus or teacher trainers of various styles of yoga), and herein lies two problems. It’s not clear that a problem exists to merit such an expensive solution.

First of all, many of the worst cases that he points out were people engaged in questionable practices on their own. I’m sorry for my frankness, but you can’t regulate stupid out of existence. There was one kid who sat for hours in Vajrasana (sitting on haunches), one who fell asleep in a forward bend, and another who had a stroke after holding a shoulder stand on a hard surface for hours. Now, my experience may not be as extensive as others, but I’ve attended yoga classes in the US, India, and Thailand. I’ve had teachers tell me to hold a pose for 5 deep breaths. I’ve even had teachers tell me to hold a pose for 10 deep breaths. No teacher has ever said to me, “Hold that pose for four hours or until you have a stroke, whichever comes first.” Even teachers with a couple hundred hours of instruction and a couple hundred more of experience don’t—as a rule—give patently stupid advice. (To the degree that there are rare exceptions, thinking that no teacher would ever again give a piece of bad advice if they just all had PhDs is a little presumptuous.)

The major problem with Broad’s suggestion of a need to overhaul the system and install bureaucratic gatekeepers and overseers and to make teachers jump through vastly more educational hoops is that it increases the cost of doing yoga with a teacher. Now, I know that yoga is associated with relatively affluent people, but—believe it or not–there are yoga practitioners who aren’t SUV-driving, Abercrombie&Fitch-wearing, maid-hiring suburbanites. If the monthly cost of attending yoga class goes from tens of dollars to hundreds of dollars because every yoga teacher has to have a PhD in Kinesiology and every studio has to comply with the extensive regulations and licensing fees of the newly formed Department of Yoga Management, then many people who are happy with the level of instruction they are currently getting are going to be emulating books and videos and injury rates could actually go up.

Another example of a “problem” that is not definitively shown to be a problem is Broad’s extensive criticism of an author of a popular book on yoga (i.e. Larry Payne) for using a Ph.D. designation that was from a southern Californian diploma-mill. While there is something objectionable about putting a PhD behind one’s name that wasn’t justly earned, it’s not at all clear that this was a problem. One expects to hear how Larry Payne left a pile of wrecked souls in his wake. However, while Broad devotes pages to ridiculing Payne for putting PhD after his name, the few mentions of the Payne’s interactions with others suggest that he helped them get healthier (e.g. Dr. Ursatine) and that he furthered the state of his professional field. The implication being that the credential matters vastly more than the individual’s experience and diligence. Interestingly, Dr. Fishman (for whom Broad has nothing but kind words—presumably because he holds an MD) is quoted as speaking glowingly about Payne and his contributions to the field.

Another example of sensationalism can be seen in the chapter on sexuality. While we would expect this chapter to be entirely about the claims of yoga being able to enhance one’s sex life, a fair amount of it is devoted to pointing out instances of lecherousness among yogis. I’m not saying that it’s bad to point out bad behavior of gurus in terms of harassing or molesting their female students, but unless there’s some evidence that this inclination is tied the sexual practices of yoga, this would seem to be the wrong venue for the discussion. In other words, if yogis are no more lecherous on the whole than other teachers or coaches, then it would seem that mention of this issue is just to titillate. If yogis are uncontrollable horn-dogs because of yogic practices, then fine, but you’ve got to establish that there’s evidence for that somehow.

Overall, I’d recommend that individuals interested in the scientific literature on yoga read this book. It provides a good overview of the literature, and is well-cited. The books weakness comes from insisting that a large number of mole hills are really the Himalayas. These mole hills can be addressed with education, but can never be eliminated. Suggesting we upend the apple cart to produce “solutions” to marginal problems is ridiculous. We may think a world in which there was never another fatal traffic accident would be nice, but I assure you we would not want to live in the world in which all the actions were taken necessary to achieve said goal. If one compares the extrapolated estimates of hospital visits for yoga injuries, they are really quite few and we have no reason to believe that the vast majority aren’t life-threatening or permanently disabling.

For me it would have been a great book if it laid out the risks and rewards, and suggested caution. Of course, then it probably wouldn’t have gotten any more attention than the many books that already exist on the subject of yoga injuries, so maybe some good can come of Broad’s implication that going to the yoga studio is akin to storming the beaches at Normandy and that we need to stop the horrors or yoga practice.

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DAILY PHOTO: Eyespot Mimicry: or, Evolution Only Gets One So Far

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Taken in January of 2014

Taken in January of 2014 in Bangalore, India.

I’ve seen butterflies and moths that had patterns evolved to mimic the eyes of other animals at a butterfly house in a botanical gardens, but this is the first time I’ve seen it in the wild–which is to say in the stairwell of our central Bangalore apartment building. This moth thought the perfect place to exploit its owl-like eyes and “feather pattern” would be on the white marble floor inside a building. Evolution only gets one so far.

Tradition v. Modernity in Fitness and Movement Arts

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TheScienceofYoga_BroadOne of my favorite professors (and I had a lot of them) was in the Religious Studies department of Indiana University in Indianapolis (IUPUI.) Among the lessons he taught us were the various forms of fallacious reasoning applicable to the discipline. He did so in a way that was both erudite and folksy, often in a humorous way.

 

 

 

While I don’t remember the formal names he gave these concepts or their technical definitions, I do remember the more colorful variations. One was the “firstist-is-bestist” fallacy in which it’s assumed that the old ways are inherently superior because bad ideas die out, and young ideas are at least as likely to be crap as not. This is sometimes called “appeal to tradition.” Over a sufficiently long time horizon this assumption may prove true (i.e. the time horizon beyond which Keynes warned we’d all be dead), but we know that wrong ideas can live on for centuries.

 

 

 

Another was the “outhouse” fallacy, which says that because pre-modern man didn’t have indoor plumbing they must have been complete idiots, and we should assume newer is better. This is sometimes called the “appeal to modernity.”  While there is some advantage to having access to the compiled knowledge of history, this doesn’t keep people from coming up with idiotic ideas regularly.

 

 

 

What made me think about these conflicting fallacies is that I’ve been reading a lot about the science of yoga–and other systems of movement–lately. Specifically, I was reading The Science of Yoga by William Broad. During the 20th century, yoga went from not giving a whit about science to trying to show that it wasn’t at all at odds with science–if not that it was grounded in science. (Note: this statement could be applied to many of the old ways—e.g. religions—which sought to prove themselves consistent with scientific evidence out of fear that–in the age of rationality–to be inconsistent with scientific observation would be death to old beliefs.) While the hucksters and con men seeking to bilk people out of money through shows of yoga “magic” have lost power (though some still exist and prey on the gullible regularly), this isn’t to say that science has yet won the day entirely.

 

 

 

Chapter two of Broad’s book discusses the findings of the scientific community on whether yoga has any merit as aerobic exercise. (The consensus is that it doesn’t.) Now, one would think that the whole yoga community would be pleased that academia has for the most part shown that yoga has a range of positive benefits that make it a worthwhile endeavor when practiced safely and conscientiously, but some have been unwilling to accept that yoga isn’t excellent cardio on top of all its unambiguous benefits. The established consensus is being ignored and a single seriously flawed study (small sample size, no control group, and—while peer-reviewed—the author was the journal editor) is cited, that one—of course—suggests that yoga meets all one’s cardio needs.

 

 

 

It’s easy to follow the incentives. For example, if one runs a yoga studio one would like to be able to say that yoga is a panacea for all of a person’s health needs. People are busy and lazy, and if someone else can sell them a silver bullet then they’ll lose business.  If one gives the matter thought, it becomes hard to imagine an exercise panacea. Consider a list of health goals that includes reduced stress, improved balance, greater flexibility, more strength, and enhanced cardiovascular capacity. One should see that some of these goals are at odds with each other. The first three goals—at which yoga excels–require holding a static position for a time while engaging in deep and controlled breathing. The fourth goal, strength enhancement, (which yoga achieves only in a limited way) requires repeated alternation of stressing and relaxing a muscle. And cardio, the fifth goal,–for which yoga is less than helpful–requires rapid and sustained motion so as to cause the heart to be stressed.

 

 

 

Of course, individuals have tried to rectify yoga’s cardio deficit by creating yoga styles that add speed and repetition. If one does five sun salutations per minute for 45 minutes, then—congratulations–you are now getting cardio and strength building. Unfortunately, you are now losing out on the first three goals of stress reduction, balance enhancement, and flexibility improvement. Those three things requiring holding poses while engaging in relaxed and controlled breathing. So the question is whether one is happy having sacrificed the benefits yoga does better than everything else in a desire to have yoga gain benefits that other exercise systems probably still do better.

 

 

 

The old systems of movement and exercise, be it yoga or chi kung, have shown themselves to have merit. However, the mechanisms by which that merit is achieved (or the nature of the merit) are often not what the system’s mythology suggests. There’s no need to fear science, but one should be ready to embrace what is shown true and set aside what is shown to be false.

 

 

 

On the other hand, this modern idea that we can have our cake and eat it too by throwing together disparate systems, which often have conflicting goals and modes of operation, needs to be reevaluated. All of these fads have been created where someone crams together tai chi and yoga or yoga and jazz dance or Zen meditation and parkour and they think they have the ultimate system based on a more complete picture of modernity, and what they’ve got is a muddle.

 

 

 

What we need is the tested merit of tradition without its voodoo, and the compiled knowledge of modernity without its hubris.

 

Antifragility and First World Diseases

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Antifragility

TheWildLifeofOurBodiesI was sitting at an outdoor cafe as I thought about how to write this post. I’d just finished reading chapter 5 of the Rob Dunn book entitled The Wild Life of Our Bodies, and was reflecting upon how interesting it was to be reading two books whose central premise–in broad brush strokes–was the same. As I was ruminating, a family of four–a couple and their two daughters, an infant and a preschooler/kindergartener–came and sat down at an adjacent table.

For a while the preternaturally-cute infant crawled around on the table top, but as the mother became concerned that the wriggly little child might fall or spill scalding coffee, she eventually set the child down. The child proceeded to crawl around on the ground–ground on which one could easily imagine pigeons trolling for crumbs. [Full-disclosure: I didn’t actually see any pigeons, or even any noticeable filth on the ground for that matter, and–while this is India–it was a major coffee chain attached to the side of a popular up-scale shopping mall, and so that particular ground was probably at least hosed down daily.] The child crawled on all-fours, except that she had the plastic number placard which told the waitress where to bring the order in one of her hands, and she would alternate between dragging it across the ground and–when she got tired of crawling–she would roll onto her rump and pop a corner of the placard into her mouth.

If reading the preceding scene made you a bit queasy, you should be reading one [or both] of books mentioned above. Doing so gave me a totally different perspective on this event. There was a point when I–like many–would have assumed the little girl would get some sort of ailment and that her parents would pay in lost sleep for letting the kid crawl on the ground in an urban public space, but I’m now more inclined to think that probably nothing will happen, and she could–theoretically–end up better off for the wear. I’m not advocating wallowing in filth, but I have come to see biological stressors in a new light. I wouldn’t go so far as to advocate letting a child crawl around sticking things in his or her mouth that have been on the ground at a cafe, but it would no longer surprise me to hear that this child lived a healthier life than children of germophobic (properly “mysophobic”) first-world moms who are about one cookie-off-the-kitchen-floor from forcing their children to live in a bubble.

The reader may be wondering two things: 1.) how these books could mitigate one’s queasiness, and 2.) what the books even have in common. If  you’re familiar with Nassim Nicholas Taleb, it’s likely you associate him with criticisms of the misuse of statistical methods, and the failure to understand under what conditions the usefulness of these methods break down. While Taleb does consider a wide range of examples in his popular books Black Swan,  Fooled by Randomness, and–most recently and most relevantly–Antifragile, the world of business is where Taleb’s background lies and where much of his discussion is centered. The Dunn book, one the other hand, fits squarely in the domain of biology and medicine.

Both of these books take as their core idea that there are systems that must face constant and occasionally serious challenges to grow stronger, and that the removal of these challenges can have adverse and sometimes dire consequences. Taleb looks at such systems in a broad and general sense, and coins a term, “antifragile”, to describe such systems. A system is antifragile if it gets stronger (i.e. in some way better) when subjected to stresses. This shouldn’t be confused with robustness, which is being indifferent to stressors. Robust systems can take or leave stressors, but antifragile systems need them or they become weakened. Dunn’s book deals with a specific example of an antifragile system, our guts. The biologist suggests that our war on parasites and germs has created a whole raft of problems never before seen. It’s probably not a new idea to most readers, as there are ongoing arguments about the risks of our antibacterial frenzy.

While first-world dwellers tend to take a superior view of those poor third-worlders and their myriad ailments–a number of which have been stamped out in the developed world–Westerners may not even be aware that there are a number of ailments that exist almost exclusively in the first world. Increasing evidence is developing that certain forms of diabetes and allergies are linked to “clean living.”  Interestingly, while one might readily imagine how a digestive tract ailment like Crohn’s Disease is tied to insufficiently populated digestive ecosystem, there’s reason to believe that diverse issues such as autism and anxiety disorders may also be linked to loss of internal predators and the imbalances their loss causes.

It’s not entirely a coincidence that I’m reading these books concurrently. I’ve been interested in the issue in a broad sense as of late. How does the craving of comfort weaken a population? What are the risks of indiscriminately weeding the stressors out of one’s life? (As seems to be a major objective of modernity.)  Of course, stressors are not eliminated, but instead stressors that are relatively feeble may become the 800 lb. gorilla of stressors.