Muscles do not disappear without practice, but the muscle hypertrophy caused by exercising the body will disappear, which is why after stopping the fitness for a period of time, the muscles will gradually disappear. Of course, some people think that muscle disappearance may be a reduction in the number of muscles, but this is not true, the muscle after a period of disuse, the number will not disappear, that is, the number of muscle cells will not change, will not be reduced, disappeared is the original exercise after the hypertrophy of muscle cells, these muscle cells due to not exercise, after disuse, will make the volume significantly reduced, water content is also reduced, so give people the The illusion is that the muscle will disappear if you don’t practice, but in reality it’s just a reduction in the volume of the muscle cells.