Thousands of years ago, in ancient India, in order to enter the highest realm of spiritual unity, monks often meditated in seclusion in the virgin forest. After living a simple life for a long time, monks have realized many natural laws from observing creatures. Then, from the living laws of creatures to the human body, they gradually perceive the subtle changes inside the body, so that human beings know how to talk to their own bodies, and thus know how to explore their own bodies, start to maintain and regulate their own health, and heal the wounds caused by diseases. After thousands of years of research and induction, a set of theoretical integrity, exact and practical fitness system has gradually evolved, which is yoga.