The Science of Inversions: Or, Why and How to Get Off the Wall

Inversions are a class of postures (asana) in which part or all of the body / limbs are raised above the head. The classic inversions are: headstand [shirshasana], shoulder-stand [sarvangasana], plow pose [halasana], forearm-stand [pinchamayurasana], and handstand [adho mukha vrksasana], but there are many more–some of which are easier and others of which are more challenging than these basics. Other than a few partial inversions (e.g. down-dog [adho mukha svanasana] and leg-up-the-wall pose), inversions tend to be daunting for beginners (and even intermediate students) at a mental as well as a physical level.

In this post I’ll focus on headstands. Most students seem to achieve shoulder-stands and plow pose relatively easily because it feels more stable. I’ll note that those two asana require as much or more care and caution as any inversion given the flexed state of the neck. On the other hand, by the time one is perfecting one’s handstand, one will likely be over the issues that I’m addressing in this post. I’ll save those poses for a later post with a different thrust.

Let’s first consider the effect inversions are supposed to have (and then the effect they tend to have in reality.)

What inversions are supposed to do: The story is supposed to go like this: 1.) The body inverts. 2.) Our body’s sensors recognize that the blood flow to the brain is far beyond its needs. 3.) The body quiets our vital signs.

What inversions (too often) actually do: It may surprise some readers that inversions are supposed to have a calming effect because the chain of events is often as follows: 1.) The body inverts. 2.) The amygdala fires, triggering the physiological responses associated with fear. 3.) One’s conscious mind imagines the pain and suffering of falling. 4.) The amygdala fires some more. One is in “fight or flight” mode, and the flight the body wants to make is to a right-side-up position.

While I’ve had to work hard to improve my inversions, I had a much easier time with this issue than many. Before you dismiss me as a narcissist, let me state unequivocally that I have no special gift for inversions . I’m not claiming to be a yoga prodigy by any stretch. Why was it easier for me? I’ve practiced a martial art for many years that required training in breakfalls (ukemi.) Therefore, I had no particular fear of falling over onto my back, because my body is trained to tuck and roll. [My only fear when I first started doing headstands in studio sessions was that someone, e.g. the teacher, would walk into my blind spot. Note to all: don’t walk behind someone’s back when they’re inverted unless you’re sure you’re out of the “timber” zone.]

Why are breakfalls so beneficial to the development of one’s inversions? Because it allows one to get off the wall. A lot of practitioners get addicted to the wall. “Addicted” may sound like a harsh term, but like addicts they think they can quit anytime and that they will quit at some undesignated point in the future–sometimes they do, but often they don’t. Reliance on the wall is reinforced by the fact that one may find one can only spend a couple anxiety-filled seconds inverted without the wall, but one can spend minutes comfortably against the wall. There’s a reason for this great disparity, and understanding this reason is crucial for knowing why doing 2 or 3 seconds unsupported (at first) is better for one’s long-term development than staying for three minutes leaning on the wall.

Here’s the deal. When you invert, your body needs to make subtle corrections to keep you on balance–at least until you reach the level of yoga genius. If you stand up with your feet together, your eyes closed, and you pay attention to your feet and legs, you’ll see that this is true when you’re upright as well. It’s just that your body is used to being upright. It knows how to make all these micro-corrections without conscious thought. The good news is that one’s nervous system rapidly learns to do the same thing when one is upside-down. When I say “rapidly” I’m not talking about the first, second, or even the twelfth time you try to do an inversion. [Trust me, despite what your mother may have told you about her darling genius, you didn’t achieve stability upright on your first few tries either.] The first several times, you’ll fall down almost immediately. However, if you keep trying, your body will learn and you’ll achieve progressively longer inverted stays. You can’t make these corrections at the speed of conscious thought. But the beauty part is that your body will learn to achieve stability solely through practice without any intellectual activity whatsoever.

Why doesn’t your body learn this when you use the wall? The cornerstone biological principle for those interested in fitness, movement, and sports is: Your brain and body are lazy; they will not develop any capability that you don’t force them to by challenging activity. Your muscles don’t get bigger without overloading them and causing little micro-tears in them that they must heal up better than before. Your bones don’t get more dense unless you put more load on them (see: Wolff’s Law.) And your nervous system will not wire itself to keep you upright in an inversion if you’re propped up against a wall. You can invert against a wall for a thousand years and not get the same benefits as from an hour of struggling to get off the wall. This principle is reflected in nature from Darwinian evolution onward. Gazelles don’t learn to run 500 miles an hour. Once it can accelerate (on average) fast enough to survive the cheetahs that prey on it, it passes on genetic material and the evolutionary pressure is off. Gazelles don’t keep getting increasingly faster than their predators for shits and giggles.

Incidentally, this is also why you should keep challenging yourself, and not rest with getting the basic form. There’s always somewhere new to take it. For example, one can look at moving between splits like so:

Alternatively, one can work on a different form of the pose, such as the tripod headstand. Transitioning from crow pose [kakasana] to tripod headstand is a good way to start to learn the bodily control that will serve one well in intermediate and advanced practice.

Yet another option is to practice a controlled descent. The inverted “L” is quite a challenge. Not as one might think because it requires tremendous core strength, but because it requires gradually leaning into the direction of falling backwards in order to counterbalance the weight of your legs.

A few notes on headstand breakfalls:

– Make sure you have room in all directions to fall without crashing into anything or anyone. While it would be nice to always fall back onto one’s feet, it’s neither realistic nor beneficial to your development. Why not? If you’re always distributing your weight to fall onto your feet, you will be keeping muscles tense and will have trouble finding a relaxed state of balance. Furthermore, there is a tendency toward panicked motion if one starts to lose balance in the wrong direction, and speed is your enemy in inversions. (One wants to do everything from entering the inversion to falling in as slow and controlled a manner as one can possibly manage.) If you get your feet up high enough to be on balance, you need to accept the fact that you’re as likely to roll onto your back as on to your feet.

– If one is doing the basic forearm-supported headstand, don’t tightly interlock one’s fingers. “Tightly” is the key word here. It’s alright to interlock your fingers, but one doesn’t want to create ridged hands such that one’s neck rolls over a 3 to 4 inch (7 to 10 cm) ledge if one falls backwards. One wants the hands to collapse.

– Tuck and roll. Don’t reach back with your foot / feet and try to arrest your fall. If you have enough strength, flexibility, and timing to make that work you probably don’t need my advice and haven’t read this far. (i.e. you have advanced gymnastic skill.) If you’re the more typical yoga practitioner, you’re more likely to injure your back, toes, feet, or some combination thereof by arching into a back-bend to arrest your fall.

– Counter-intuitively, you probably don’t want to put anything behind you to soften your fall. You don’t want your spine rolling over surfaces that are at different levels–even if one them is relatively soft. It’s usually best to roll over a level surface, even if that surface may be a bit hard. Furthermore, if you think you’re going to save yourself by working entirely on a softer surface, you’ll probably find yourself falling more often and for a longer period. Softer surfaces are harder to maintain balance on. That’s why one of the primary ways that we make an exercise more challenging is to do it on a softer (more rolly) surface.

– Don’t let your neck crumple. On a related aside, never look around while you’re in a headstand. If you need to see something, e.g. the teacher’s demonstration, come out of the headstand.

– However you come out of an inversion, don’t neglect the counter-pose. For the headstand, child’s pose is a common counter posture, and you should spend some time there upon exiting the pose.

– It’s best to begin one’s practice of inversions under the supervision of a qualified teacher. As one develops confidence and one’s body begins to learn how to maintain stability, one can make these postures an increasing part of one’s practice.

It’s hard to get get a good sequence of pics to show how to breakfall–given my limited photography skills, that is. But here’s my attempt.