Some men practice muscles slowly, which is mainly related to the exercise method and their own body. Because some people are naturally full of muscles, they can develop very beautiful abdominal muscles and other muscles with a little training, while some people may be naturally weak, so at the beginning of exercise, the muscle growth may not be so obvious, but if they persist for a long time, they can actually grow slowly, but they just need to pay a lot more efforts than ordinary people.

On the other hand, some professional fitness instructors are actually more scientific than ordinary people in their exercise methods, because they not only make muscles grow out from their exercise methods, but also pay great attention to dietary supplements in their daily lives, especially eating some raw eggs and beef, which ordinary people can't eat at all. However, in order to grow muscles faster, some fitness instructors usually eat these things raw, so these things can also supplement a lot of protein for muscles, resulting in muscles growing very fast. Some coaches may take various hormones in order to grow muscles quickly, which is very bad for the human body, but very beneficial to the production of muscles.