Hindu Medicine c8.127

c8.127

This rather fanciful speculation on the varying intensity of the exhaling breath is based upon the prevalent conception of the vital element of wind as a subtle substance essential for the body. In so far as it is centered in the mouth and throat, it is normally in constant motion, flowing out and back alternately. One of the special accomplishments of yoga training is to gain control over the natural rhythm of this spontaneous process of extruding and withdrawing the vital substance of wind. To reach the point where the tidal flux of exhaling and inhaling is put to rest is thought to be the final achievement in yoga breathing technique; then the breath is definitely withdrawn to its inner source and is retained there for a prolonged period of quietude. The benefit derived from this proficiency, according to Haṭha-yoga teaching, is the achievement of complete quietude and the unruffled clarity of the mirror-like mind, which is only possible when the breath is wholly at rest, a stillness which allows for unbroken, perfect concentration on the object of inner realization.⁸