People are social animals, and their behavior habits should be observed from the perspective of society. Squat standing posture, handstand, these simple movements can increase physical strength, and even the once very popular prisoner fitness can not replace the role of the gym. One is that in that team atmosphere, there is a sense of identity and belonging, and everyone is working hard for the same goal, which will increase your motivation to stick to it. Secondly, there are coaches and friends in the gym, which can correct some action mistakes in time and prevent injuries. Finally, the hardest thing about exercise is persistence, which is easier said than done. So now the gym even has a routine, punching in three times a week and giving away the fitness expenses for the next year for free. Few people can really get this bonus, let alone stick to it at home.