The theoretical optimum time is 14:00~ 19:00. Human activities are controlled by biological clock, so it is more beneficial to health to arrange exercise time according to the law of biological clock. Fitness in winter, the afternoon 14:00- 19:00 is the best. In addition, when the outdoor temperature is relatively high, the human body's own temperature is also relatively high and its physical strength is relatively abundant. At this time, it is easy to get excited, and it is easier to enter the state of exercise.

Afternoon (14:00~ 16:00): It is a good opportunity to strengthen physical strength, and the muscle endurance is 50% higher than other times.

Dusk (17:00~ 19:00): Especially when the sun goes down, the human body's exercise ability reaches its peak, and its vision and hearing are more sensitive, and its heart rate and blood pressure also rise.

However, it should be noted that you should not run for half an hour before and after meals, and you should not run forcibly when your body is short of energy.

Extended data:

Running needs to pay attention to these points:

1, running should have a correct running posture.

Exercise requires correct posture, and improper posture can easily cause physical injury. Generally speaking, when running, you should keep swinging your arms back and forth, coordinate your upper and lower limbs, have elastic feet, breathe rhythmically, and relax naturally.

2. It is suggested to make a running plan.

Fitness needs perseverance, so does running. You can't "fish for three days and dry the net for two days". If the interval between two runs is too long, the fitness effect will not be accumulated, the physical quality and function will not be consolidated and improved, and the effect will not be satisfactory. Therefore, it is suggested to make a running and fitness plan, running at least three times a week, each time 10 minutes or more.

3. Running should be gradual, and the intensity of exercise should be combined with your own situation.

Generally speaking, exercise load mainly includes: exercise amount, exercise intensity and exercise density. So know how many laps to run, how long to run, and how long to run. Don't talk about how many laps you ran and how long you ran.

Generally speaking, the greater the running intensity, the shorter the runner's distance, the smaller the running intensity and the longer the runner's distance. What is exercise load, or the number and intensity of running, depends on your physical condition.

Reference link: People's Daily Online-Is morning running better than fun run? Pay attention to these points when running.