In Yoga, breathing is considered a very important process as it is the most vital means of absorbing Prana into the body. The Shastras explain how Prana gives consciousness and life to every creature which breathes. According to Taittiriya, Brahmana and Maitri Upanishads and Shiva Swarodaya, the breath is referred to as the vehicle of Brahman or cosmic consciousness.
The sitting postures of Hatha Yoga are important as ideal postures for a correct practice of Pranayama and meditation, apart from limbering legs and hips, strengthening the back and improving the posture. They are the most efficient postures of the body to allow psychophysical energy to flow freely with maximum relief of tension.