Correcting posture really belongs to a kind of sports rehabilitation. And good posture is necessary for fitness, but you need to be careful if you sell stretching classes that can correct posture! Poor posture will lead to half the effort, and even easily lead to injury. Correcting posture requires not only stretching and relaxation, but also targeted training to achieve the effect of correcting posture. It is recommended to identify the professionalism of the coach before buying.