Surya Namaskar is done for deep Lymph node drainage. Two-thirds of the lymph are produced in the liver and intestines. With continuous bending up and down in a blissful flow, Surya Namaskar strengthens the navel chakra, increases our inner fire Agni (important for immunity and ability to digest even most painful situations of life) and can increase lymph flow 20 fold! Chakras are balanced, endocrine system is gradually optimized, spine becomes suppler, metabolic rate gets increased, etc. In fact, it is said that 10 minutes of Surya Namaskar (with proper breathing) is equal to the effect of one hour of light jogging.