According to the principle of regulating the body's biological clock, the body's adaptability and physical exertion are best in the afternoon and near the evening (about 4 to 6 o'clock). At this time, most people are calm and stable, full of physical strength, and the flexibility, coordination, accuracy and adaptability of technical activities are at their best, so running at this time is also a very good choice.

Jogging in the morning

Moderate and appropriate morning running has been highly praised by many people, because it can stimulate sympathetic nerves, not only make the body flexible and quick-thinking, but also help to improve work efficiency.

But the environmental problem of morning running is the most serious. Early morning is the peak time of heart attack, so morning running will do harm to the hearts of many elderly people. The adrenaline secretion of morning running is 2 to 4 times higher than that of afternoon running and fun running. Blood sugar is at a low level in the morning, and high-intensity running will consume a lot of blood sugar, which will easily lead to hypoglycemia. Moreover, the environmental problems are the biggest in the morning, especially before sunrise, when the concentration of carbon dioxide in the air is high, which is not suitable for sports with high oxygen consumption.

Running in the afternoon

Running in the afternoon is the best physical condition. The highest and lowest points of human physical strength are controlled by the "biological clock" of the human body, and generally reach the peak in the afternoon near evening. At this time, most people are calm and stable, full of physical strength, and the flexibility, coordination, accuracy and adaptability of technical activities are at their best, so running at this time is also a very good choice. Therefore, it is suggested that the best time for running is from 4 pm to 6 pm. But for most runners, this is a busy time, and it is difficult to have time for running exercise.

Running at night

For all people who have no time to exercise during the day, fun running has become the best choice. Contrary to morning running, the number of platelets in fun running decreased by 20%, which greatly reduced the risk of vascular embolism. After fun running, the brain secretes more melatonin and growth hormone during sleep, which can promote the growth and development of teenagers, improve the immunity of adults and promote sleep. And at night, hormones, the key substances of human metabolism, have the strongest response to physical exercise. This also means that fun running is a good way to lose weight.

However, in addition to experiencing the late peak, there are also problems with air quality. In the view of Chinese medicine, sweating is vulnerable to wind and evil, and excessive exercise at night consumes yang, which is not conducive to human health. When people are running, blood flows to the limbs one after another, which makes their body temperature rise and the acupoints open after being heated. At this time, blowing air is easy to get into exogenous pathogenic wind and cold, and bury hidden diseases.