If you want to lose muscle, you must first know how to consume muscle. To consume glycogen needed by people to do aerobic exercise, first of all, it is consumed, then it begins to decompose and utilize fat, and finally it decomposes muscle cells. Therefore, if you want to lose muscle, you must do extreme aerobic and long-distance running, which is only useful for about 5 kilometers a day. Another way is to go on a diet, but it is not good for your health. It's better to exercise less.