Yoga exercise is a union of body, mind, and spirit . The background of yoga is lengthy and steeped in custom. Yoga exercise is an ancient system of health and fitness which stemmed in India. Words yoga has its initial mention in the Rig Veda, the oldest of the sacred messages. Those that research Yoga quote its age to be four thousand years. The history of Yoga can be separated into four primary periods which are the pre-classical duration, timeless period, post-classical period, and also contemporary period. In the background of yoga exercise, guide is called the yoga exercise sutras. The history of yoga exercise would certainly not have been finished in the timeless stage of yoga.