Prisoner fitness, step by step upgrade method is desirable, and strength effect can also be practiced. But an unscientific movement arrangement, a lot of bridge practice only exercises erector spinae and ignores other waist muscle groups, resulting in chronic problems. Second, the explanation of the action is not good. Many people misunderstand that squatting with the knee joint (actually the hip joint) causes knee injury (this is irreversible, and if it is broken, it will be broken). Three commercial pyramid schemes, not going to prison to make up prison stories, casually touting unarmed fitness. I have 5 pull-ups on one arm, 20 push-ups on one hand and one foot, and squat on one leg 100 kg. I don't dare to compete with the strength weightlifter at all, but he said that unarmed strength is the strongest.

The city is a gym, written by Gao Gong, the great god of Parkour. He is very professional and has a deep understanding of sports training, posture, anatomy and rehabilitation. The main problem is that a picture is relatively small. The second is the street fitness section, which is too demanding. In fact, it meets half of his requirements, and the action standard is fine. For example, he asked each group to do 6 groups 10 asymmetric pull-ups and break through one-arm pull-ups in 2 minutes. In fact, there are at least four pull-ups in one hand.