Anaerobic exercise refers to boxing, high jump, long jump and other sports with high intensity and short time. Run 200m or 400m, swim100m, etc. It's all anaerobic exercise Anaerobic exercise consumes ATP stored in human body. ATP energy can only be maintained for 15 seconds, and it will be used up after running 100 meters. After running 200 meters, the next 100 meters must be powered by the rapid synthesis of blood sugar in anaerobic state, and its by-product is lactic acid. It uses the energy provided by anaerobic decomposition of blood sugar, so a lot of lactic acid is accumulated in muscles after exercise, which is a substance that causes muscle pain after exercise. The blood sugar required for this kind of exercise is provided by starch, so you can't burn fat, which is not conducive to losing weight. The energy provided by anaerobic decomposition of blood sugar (starch) can only last for 40 seconds, and it will be used up after running 400 meters. When running 800 meters, in the next 400 meters, blood sugar, blood fatty acids and blood amino acids must be synthesized to provide energy, while blood sugar is supplied by starch decomposition, blood fatty acids are supplied by fat decomposition, and blood amino acids are supplied by protein decomposition. This whole process needs oxygen, that is, oxygen burns starch, fat and protein to produce heat energy ATP, which supplies the heat needed in the later stage of exercise. This is aerobic exercise. Aerobic exercise can lose weight.