First, from the best time of exercise, it is most reasonable to exercise in the afternoon near evening. The reason is that all kinds of activities of the human body are influenced by the "biological clock". Whether it is the adaptability of the body or the exertion of physical strength, it is best in the afternoon near the evening. On the other hand, the blood pressure and heart rate during exercise in the morning are significantly higher than those at night, which will pose a threat to human health. But the reason why people choose morning exercises is mainly influenced by the habit of going to bed early and getting up early, and another reason is that they have no time to practice in the afternoon.

Second, from the point of view of exercise, it is often divided into fitness exercise and weight loss exercise. Generally, it takes half an hour to do physical exercise 1 hour. That is to say, in order to achieve the effect of exercise, it is necessary to make the pulse reach 120 beats/minute and last for a period of time, but at least 15 minutes, which is too little to achieve the purpose of fitness exercise.

Weight loss exercise should be more than 1 hour. Because after half an hour of exercise, the body begins to transform the energy released by glycogen into the energy released by fat; Exercise 1 hour or so, the energy required for exercise is mainly fat. In other words, if you stop exercising at the beginning of fat decomposition, the effect of losing weight is self-evident.