There are different types of muscle exercises, such as bodybuilders' muscles, but some athletes' muscles are practical, such as Schwarzenegger's muscles, which are bodybuilding and exposed. This method of exercising muscles requires a small intensity of exercise and repeated exercise to make muscle mass deposit bigger, which is what professional books say to make muscle fibers thicker and wider. Another kind of exercise requires a little excessive intensity. What he wants is explosive power, which can make a quick effort in a short time. If he wants this type, he needs to increase the intensity of exercise and not need too long exercise time. For example, as long as a weightlifter can lift a heavy weight in an instant, he can do it. In order to avoid the deposition of muscle mass during exercise, he should relax his muscles every time he completes a high-intensity training to avoid the appearance of big shots. Depending on what kind of muscle you want, different types of training methods are different!