Yoga is not martial arts. The word "yoga" comes from Indian Sanskrit "yug" or "yuj", which means "consistency", "combination" or "harmony". Yoga is a philosophical system that helps people to give full play to their potential by improving their consciousness, and a sports system under its guidance. Yoga posture is an ancient and easy-to-master method to improve people's physical, psychological, emotional and spiritual abilities, and it is a form of exercise to achieve the harmony and unity of body, mind and spirit.