There are two kinds of fitness exercises. One is aerobic exercise and the other is anaerobic exercise.

You may know the term "aerobic exercise". But do you know which sports belong to aerobic exercise? Many articles about fitness mostly recommend people to choose walking, jogging, running, cycling, mountain climbing, stair climbing, swimming, dancing, Tai Ji Chuan and some small ball games. These activities belong to aerobic exercise. The common feature of these movements is low intensity, which can last for a long time or move a long distance. Most of them are "periodic actions", that is, only some actions need to be repeated repeatedly, so the technical requirements are not high. Walking, jogging, running, cycling, climbing stairs and swimming are typical periodic exercises.

Anaerobic exercise refers to the high-speed and intense exercise of muscles in the state of "hypoxia". Anaerobic exercise is mostly an exercise with high load intensity and strong instantaneity, which is difficult to last and the time for fatigue elimination is slow. The biggest feature of anaerobic exercise is that the oxygen intake during exercise is very low. Because the speed is too fast and the explosive force is too strong, the sugar in the human body cannot be decomposed by oxygen, so we have to rely on "anaerobic energy supply". This kind of exercise makes the body produce too much lactic acid, which leads to muscle fatigue, muscle soreness and shortness of breath after exercise. If you want to make your body stronger, you can go to the gym to take part in anaerobic exercise. However, when exercising, it is best to listen to the guidance of the coach and choose a training plan that suits you.

So you can exercise according to your personal needs.