Pranayama is a popular term now a days. But it is not just a breathing exercise!!! Let's see Pranayama from the eye of Patanjali Yoga Sutra. Maharishi Patanjali, the compiler of yoga sutras has enlightened the path of ashtanga yoga (the eightfold path of yoga). And Pranayama is the fourth limb of ashtanga yoga which comes after asana. He has mentioned some of the sutras about Pranayama in "Patanjali Yoga Sutra", one of the greatest work on yoga. The sutras are from chapter two, Sadhana pada starting from 49 to 53. In this blog the yoga sutras shares the knowledge about what is pranayama, stages of pranayama, goal, result and factors on which the practice depends. These five yoga sutras enlightens everything about the pranayama.