Our recent blog about the myth of oxygenation got a big response. Lots of surprise, some disbelief and a lot of requests for more information. Specifically, if deep breathing does not have a positive impact on our oxygen levels, why do we do it?
There are three huge benefits to practices of breathing: activating and balancing the muscles of breathing, which in turn affects the nervous system; balancing the hemispheres of the brain through the nostrils; and awareness and minor control of the breath-regulating parts of the brain.
THE MUSCLES & THE NERVOUS SYSTEM
You may have heard that some people are belly breathers and some are chest breathers. Most of us have at least a slight imbalance between the abdomen and chest, while others have extreme imbalance. This doesn’t necessarily have an effect on our ability to get oxygen, but it does have an impact on our nervous system.
Generally speaking, abdominal breathing that uses the diaphragm and relaxes the abdominal muscles stimulates the parasympathetic nervous system. The opposite is true for chest breathing that uses the intercostal muscles. This stimulates the sympathetic nervous system.
Neither of these is a problem until our breathing patterns become imbalanced and we breathe primarily through only one of the systems. When years or decades go by, one part of the nervous system chronically gets stimulated while the other gets suppressed. Belly breathers will be more relaxed, sleep more, have lower body temperature, be more lethargic. Chest breathers will be more energetic, more stressed, warmer, sleep less.
It is vital for progress in yoga to have balance in the nervous systems. So the first step of breathing practice is to learn to use both parts of the breath, strengthening the muscles and evening the nervous systems.
The olfactory nerves in the nose go straight to the brain. They have the most direct connection to the brain of any of the senses, so their stimulation through the nostrils is potent. The breathing practice of Alternate Nostril, which goes by many names, is one of the oldest yogic techniques. By alternating which nostril we breathe into, we vary the hemisphere of the brain that we stimulate. This has a further effect on the sympathetic and parasympathetic nervous systems, and goes even further to balancing the dual nature of the body and mind.
PARTS OF THE BRAIN
The breath is controlled by the brain stem, the oldest part of our brain. Most of the time, we breathe with no conscious thought. But the newer parts of the brain, specifically the cortex, have the ability to override the brain stem to some extent, especially with practice. This awareness and control is very difficult and not appropriate for beginning practitioners, but it is the ultimate reason for breathing practices. Gradually we come to realize the true nature of the breath, which brings us closer to realizing the true nature of the self. (Apologies for the abstract yogi talk, but I don’t know of a clearer way to put it.)
So breathing is powerful. If we use it correctly it has the ability to balance our nervous system, the hemispheres of the brain, and even put us in touch with some deep and essential parts of our being. To me, this is all way more exciting than oxygenating the body!!
Scott & Ida are Yoga Acharyas (Masters of Yoga). They are the head teachers of Ghosh Yoga. This blog is about their experience with yoga practice, study and teaching.
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