Anaerobic exercise is relative to aerobic exercise. The metabolism of the body is accelerated during exercise, and the accelerated metabolism needs to consume more energy. The energy of human body comes from the catabolism of sugar, protein and fat. When there is not much exercise, such as jogging, playing badminton, dancing, etc., the energy supply of the body mainly comes from the aerobic metabolism of sugar. The exercise that mainly depends on the aerobic metabolism of sugar is what we call aerobic exercise. When the sports we are engaged in are very intense or explosive, such as weightlifting, 100-meter sprint, wrestling and so on. At this time, the body needs a lot of energy instantly, but under normal circumstances, aerobic metabolism can't meet the needs of the body at this time, so sugar quickly produces a lot of energy through anaerobic metabolism. Exercise in this state is anaerobic exercise.

The intake of oxygen 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.

The common anaerobic exercise is simply: aerobic exercise, whose main purpose is to consume body fat, enhance and improve heart and lung function, prevent osteoporosis, and adjust psychological and mental state, which is the main exercise mode of fitness.

And anaerobic exercise: the purpose is to exercise muscles, improve the explosive power of muscles and improve the ligaments of muscles.

I hope my answer is helpful to you. Sports include sprint, weightlifting, throwing, high jump, long jump, tug-of-war, push-ups, diving and muscle strength training.