Just in Time for the Holidays Inverted Poses


by Nina
In my original post about the relaxation response and yoga (see here), I mentioned that inverted yoga poses are one of the many ways you can trigger the relaxation response. Inverted poses are my personal go-to stress busters of choice, and if I could get my hands on Paul Weston (see here), I’d certainly teach him one or more of these amazing poses. So today I’m going to explain what I mean by “inverted poses,” and I’ll also provide some scientific background on them because understanding why these poses work can help you get the most out of them. Okay, here goes:

Any yoga pose where your heart is above your head is considered to be an inversion. Inverted yoga poses include full inversions, such as Headstand and Shoulderstand, where your heart is directly over your head and the rest of your body is also fully inverted. Also included as inverted poses are partial inversions, such as Downward-Facing Dog pose and Standing Forward Bend, where your heart is less directly over your head and your legs are either not fully and not at all inverted.

The reason these poses trigger the relaxation response is due to the mechanisms that control your heart rate and blood pressure. The nerves that control your heart rate and blood pressure are regulated through pressure sensors called baroreceptors. Your baroreceptors are located in the wall of each internal carotid artery at your carotid sinus (the arteries on each side of your neck that carry blood from your heart to your brain) and in the wall of your aortic arch (just above your heart). These baroreceptors detect any changes in your blood pressure, stretching when blood pressure is high and shrinking when blood pressure is low.

If your baroreceptors detect a fall in your blood pressure, they  signal your  brain to increase your heart rate, constrict your blood vessels to raise your blood pressure, and switch your nervous system to fight or flight mode. Likewise, if your baroreceptors detect abnormally elevated blood pressure, they signal your brain to slow your heart rate, relax your blood vessels to lower your blood pressure, and switch your nervous system to relaxation mode.

In an inverted pose, your heart is higher than your head, the opposite of its position when you are upright. With your heart higher than your head, gravity causes more blood to flow in the direction of your head, creating more pressure than usual on your carotid sinus and aortic arch. As the pressure on those arteries increases, your baroreceptors are stretched, and this causes signals to be sent to your central nervous system as if your blood pressure was high throughout your body. That in turn causes your brain to reduce the pressure on the arteries, slowing your heart rate, relaxing your blood vessels, and releasing hormones that decrease adrenaline production. This automatically switches your body to relaxation mode.

In addition, inverted or partially inverted poses where your neck is flexed (that is, your chin is pointing toward your chest), as in Shoulderstand, Plow pose, or Bridge pose, put additional pressure on your carotid sinus (the arteries on each side of your neck that carry blood from your heart to your brain). This added stimulation of your baroreceptors may enhance the calming effects of the inversion. 

How simple is that? As long as you are warm, quiet, and comfortable in the inverted pose, all you have to do is let pose work its magic! Naturally, supported versions of the poses (such as Shoulderstand with a chair or Bridge pose on blankets) are more relaxing than straight versions of poses in which you must support yourself, so if you’re practicing inversions for stress reduction, choose the supported versions.

In the coming weeks, I’ll provide details about the various inverted poses, but until then, the following is classic sequence of calming inversions. You can do any or all of these poses, but if you do more than one, I recommend doing them in the order shown below.
  1. Downward-Facing Dog pose, with your head resting on a block or folded blankets (1 to 3 minutes)
  2. Standing Forward Bend, with your head resting on a block or with folded arms and head resting on a chair seat (1 to 3 minutes)
  3. Wide-Legged Standing Forward Bend (Prasarita Padottansansa), with your head resting on the ground, a block, or the seat of a chair (1 to 3 minutes)
  4. Headstand (3 to 10 minutes)
  5. Shoulderstand, with a chair (3 to 10 minutes)
  6. Half Plow pose, with your legs supported by a chair seat (1 to 3 minutes)
  7. Supported Bridge pose, with your shoulders and head resting on the floor, your torso and legs supported by blankets or bolsters (5 to 15 minutes or longer)
  8. Legs up the Wall pose (Viparita Karani) with your pelvis supported with a bolster or blankets (5 to 15 minutes) 
I’ve taught this sequence many times, and there are always people in each class who have difficulty with one or more of these poses. So I always teach a non-classic pose as well, Easy Inverted Pose (see here), because this is one pose almost everyone can do. Use this as a substitute for Shoulderstand, Plow pose, Bridge pose, or Legs Up the Wall pose, or just use it on its own.

Caution: Inverted poses may be unsafe for those with certain medical conditions (see here).

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