It has a certain influence, but on the positive side, fitness and muscle training should have large muscle groups, including back and legs. Now let's focus on our legs. The simplest, direct and effective training is weight-bearing squat. Although this is leg training, it will increase the muscles of the whole person, because squatting will make the human body secrete a substance-testosterone. Testosterone can not only promote muscle growth, but also enhance men's sexual desire and ability. But at the same time, we should also pay attention to rest during training.