 The sarvanga-asana is considered by many to be the most beneficial of all yoga postures. Because of its many benefits, if you find that your time is limited in the course of Yoga practice at home, it is recommended to place special emphasis on the sarvanga-asana.
When performed in the morning the sarvanga-asana relieves fatigue caused by sleeping too much or too little and when practiced in the evening it helps to promote deep, restful sleep. It strengthens the back and helps to relieve lower back pain.
The increased blood flow to the head and upper body helps to heal many disorders such as headaches, nasal congestion and sore throats. The entire endocrine, digestive, nervous, and venous systems of the body are stimulated in ways that no form of diet or conventional exercise can perform.
Because the body is inverted a rich supply of oxygenated blood is sent to the organs and glands in the upper part of the body, such as the brain, thyroid and pituitary, and heart thereby stimulating them. Pressure is relieved from the lower body extremities relieving pain and/or swelling of the feet and legs. The sarvanga-asana also provides great benefit to the abdominal organs helping to relieve gas and constipation and stimulate digestion. Regular practice of this posture invigorates the mind and helps to calm the nervous system.
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The Yoga Sutras
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