The Viparîta Karaṇî.
Above the navel and below the palate respectively, are the Sûrya and the Chandra. The exercise, called the Viparîta Karaṇî, is learnt from the guru's instructions. 78.
This exercise increases the appetite; and, therefore, one who practises it, should obtain a good supply of food. If the food be scanty, it will burn him at once. 79.
Place the head on the ground and the feet up into the sky, for a second only the first day, and increase this time daily. 80.
After six months, the wrinkles and grey hair are not seen. He who practises it daily, even for two hours, conquers death. 81.