Then there is no need for aerobic exercise. Because fat is difficult to decompose, when you do aerobic exercise and are hungry, the first thing to decompose is muscle. It is difficult to gain muscle. If you are thin, you can take oxygen. That's not asking for it. This is why many people exercise for a long time and find that their body shape has not changed much. The best time to gain muscle is winter, because the metabolism of human body is much slower than other seasons. At this time, muscle gain is the best time. In the meantime, I don't recommend reducing fat not only for thin people and fat people.

In my opinion, the benefits of aerobic exercise are the improvement of endurance, the improvement of cardiopulmonary ability and the reduction of body fat. Some aerobic exercises, such as long-distance running and spinning, will bring some damage to the joints.