Yoga exercise is a union of mind, body, as well as spirit . The background of yoga exercise is long and also soaked in tradition. Yoga is an ancient system of health and fitness which came from India. Words yoga has its initial reference in the Rig Veda, the earliest of the sacred texts. Those that study Yoga quote its age to be four thousand years. The background of Yoga can be separated into 4 primary periods which are the pre-classical duration, timeless period, post-classical period, as well as modern duration. In the history of yoga, guide is called the yoga exercise sutras. The background of yoga exercise would not have actually been completed in the classical stage of yoga.