what can I say? If you are a complete stranger to the gym, it is still necessary! Because novices don't understand many instruments, their movements are not standard, their power points are not concentrated, and their exercise effect is low, which will dampen their enthusiasm. It will gradually make people lazy, leading to not going to the gym and wasting money on card processing. Unless they have a sports foundation, it is recommended to teach privately. You don't have to take many classes. You can exercise by yourself after five classes.