Intermittent exercise. Intermittent is rest, and exercise is divided into anaerobic and aerobic. High intensity intermittent exercise is anaerobic exercise. In fact, it is a kind of exercise, which corresponds to low intensity. This method was first used in track and field events by Czechoslovakian athlete E Zatopik in the last century, and has created more than ten world records. Later, in the forties, German coach Dr. Bo Gerschler and cardiologist Dr. Hobert verified and improved interval training, which enabled German athletes to break the track and field world record many times. At the end of the last century, some studies found that it had a better effect on weight loss, so it became popular all over the world, and this sport was also launched in China. Suitable for all kinds of sports training, such as running, ball games, bicycles, equipment, swimming and so on. Strictly follow "exercise+rest". The intensity is about 160- 190/ min, and the intermittent rest is about 10-60 seconds (calculated separately). A few minutes of high-intensity intermittent exercise is equivalent to half an hour of aerobic exercise and so on. Because the weight loss effect is better, it is very fashionable.