Exercise is called anaerobic metabolic exercise. Aerobic exercise, as its name implies, is to exercise under aerobic metabolism, so as to consume excess fat in the body and achieve the purpose of losing weight. During exercise, due to muscle contraction, a lot of nutrition and oxygen are needed, the number of heart contractions increases, and the amount of blood pumped out each time is more than usual. At the same time, the demand for oxygen has also increased, the number of breaths is more than normal, and the degree of lung expansion is also greater. Therefore, when the exercise continues and the muscles contract for a long time, the heart and lungs must strive to provide oxygen to the muscles and take away the waste in the muscles. 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. 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. How to match aerobic and anaerobic exercise? These two kinds of sports have their own uses. Low-intensity, long-term exercise is basically aerobic exercise, such as walking, jogging, long-distance slow swimming, cycling, dancing and so on. Aerobic exercise can effectively exercise the heart, lungs and other organs, and can improve the cardiovascular and pulmonary functions. However, sports with high intensity, large amount of exercise and short time are generally anaerobic, such as swimming at 100 m and 100 m, and high jump, weight lifting, push-ups, quick sit-ups, horizontal bars and parallel bars are all anaerobic. The main function of anaerobic exercise is to exercise bones, muscles, joints and ligaments, strengthen tendons and bones, and prevent and treat cervical spondylosis. If you have enough time, you'd better do both anaerobic and aerobic exercise. It is generally recommended that you do anaerobic exercise first, and then do aerobic exercise to reap the benefits of both kinds of exercise. If you are busy with work and life, you can also do HIIT (High Intensity Interval Training), which has a good effect of reducing fat and shaping.