Flying swallow is a common way to exercise the muscles of the back and waist. Traditional Chinese medicine orthopedics and traumatology is widely used. It is named after the appearance of the human body is similar to that of a swallow in Yu Feixiang. It is often used for lumbar disc herniation and rehabilitation after lumbar surgery. The specific method is to lie prone on the bed, remove the pillow, hold your head behind your hands, make your head and chest leave the bed, straighten your knees at the same time, and force your thighs to leave the bed for 3 ~ 5 seconds. Then,