Balancing Your Nervous System with Alternate Nostril Breathing

by Timothy

Mountain, Sky, Clouds by Melina Meza

In my last post Pranayama for Everyone: Bhramari Breath I wrote about the importance of pranayama (yogic breathing practices) and introduced one of my favorites, Bhramari, the buzzing bee breath. Today, I'm going to tackle the pranayama I consider the most important: alternate nostril breathing (Nadi Shodhana or Anuloma Viloma).

It turns out that almost all of us breathe primarily through one nostril for parts of the day, and then switch to breathing primarily through the other nostril at other times. The ancient yogis knew wrote about this and modern science has confirmed it (see p. 62 of my book Yoga as Medicine for details). Research has confirmed that breathing through the right nostril is linked to the sympathetic nervous system (SNS), whereas left nostril breathing activates the parasympathetic nervous system. This is pretty much exactly what's described in ancient yogic texts, albeit using metaphoric language. The left channel ida [pronounced ee DAH] is the feminine, lunar, cooling side, the texts say, whereas the right channel pingala [pronounced peen gah LAH] is the masculine, solar, heating side.

Many people in the modern world have an imbalance in their nervous systems, usually too much activation of the SNS, the flight or fight response. Others, such as some people with chronic fatigue syndrome, have too much parasympathetic tone. In either case, alternate nostril breathing can be useful. In Ayurveda, Nadi Shodhana is felt to be good for people of all constitutional types. I have found it particularly useful for students with an increase in the vata dosha (see Autumn, Healthy Aging and the Ayurvedic Dosha Vata), which is especially common now as we move into the cooler weather of the fall season.

If you have never tried alternate nostril breathing, you may have seen pictures of yogis using their fingers to alternately close of one nostril, then the other. Typically the thumb of the right hand is used to close off the right nostril and the fourth finger (or sometimes the fourth and fifth together) is used to block the left nostril. This "digital pranayama" is a wonderful practice that I've done daily for many years. But not everyone can do it.

For example, some people with arthritis find it too cumbersome or painful to use the fingers this way. If you've got a deviated septum or nasal congestion, digital alternate nostril breathing similarly may not work well due to the obstruction to air flow. In these instances, mental alternate nostril breathing, where you simply imagine to air going into one side and out the other is a great option. And the practice is so simple and safe that I often teach it to beginners.

To practice mental alternate nostril breathing, sit as you would for meditation, relaxed but perched high enough that your lower back can have its healthy inward curve. With your eyes closed, slowly breath in and out a couple of times. Then imagine you are inhaling through the left nostril and that you are exhaling through the right nostril. Next imagine inhaling through the right nostril, and exhaling through the left. Continue this pattern:

1. Inhale left
2. Exhale right
3. Inhale right
4. Exhale left

If you're new to pranayama, try this practice for just a minute or so. If it feels comfortable, you can continue for five minutes or longer. Since you began by inhaling on the left, end your session after an exhalation out the left nostril. Did you notice that your breath followed your intention?

If you are comfortable, I'd suggest you sit quietly for a few minutes after you finish or, if time allows, do a meditation practice. The ancient yogis taught that the balancing effects of Nadi Shodhana make it the perfect prelude to meditation, helping your meditation be calmer and more focused.

If you are an asana practitioner who tends to skip both pranayama and meditation, I have a challenge for you. For the next two weeks, try to do two minutes of mental Nadi Shodhana, followed by three minutes of sitting every morning before eating (or another time that suits you), and let us know how it goes. I suspect you'll be pleasantly surprised by the results.