Yoga is an intermediate stage. Practitioners have learned to adjust their breath through the holy light, can independently complete the intermediate asana, and can use breathing to find mistakes in asana practice.

Yoga:

Yoga posture uses ancient and easy-to-master skills to improve people's physical, psychological, emotional and spiritual abilities. It is an exercise method to achieve the harmony and unity of body, mind and spirit, including posture method, breathing method and meditation method, so as to achieve the unity of body and mind.

Yoga is not only a popular or fashionable fitness exercise. Yoga is a very ancient energy knowledge cultivation method, which integrates philosophy, science and art. Yoga is based on ancient Indian philosophy. For thousands of years, psychology, body and spirit have become an important part of Indian culture.

Ancient yoga believers developed a yoga system because they believed that by exercising and regulating breathing, they could control their thoughts and emotions and maintain a healthy body.

Refer to the above? Baidu encyclopedia-yoga