Running is a special test of endurance mode of exercise, and in the hot summer, the sun's radiation will make people tired, so outdoor running should avoid the sun, even if you are not afraid of tanning, not afraid of the heat, you are not afraid of running in the sun, there is still some damage to the body, because the sun contains ultraviolet rays, ultraviolet rays penetration is extremely strong, penetrate the skin will damage the skin's active So it is not recommended to run in a place where there is direct sunlight.
The time to avoid direct sunlight is probably early in the morning and late in the evening, while we are running, the light is too dark will affect the line of sight, it is easy to some danger, so running should not be too early or too late, you should choose a time when the sun rises in the east and sets in the west to run the most appropriate.
If you choose to run early in the morning, the surface temperature is relatively low due to the absence of the sun at night for a few hours, and your body generates heat during exercise so that you don't feel particularly hot when you run, and when you finish your run, the first rays of sunlight in the early morning feel really comfortable.
There is another advantage of running in the morning is that the human body after a full night's sleep, the body's various functions are still in a dormant state, although people wake up, but the body has not been fully awakened, if you participate in some of the activities at this time, you will feel that the body can not make the feeling of strength, this feeling may sometimes accompany you all day, so that your mental outlook is in a more closed state.
Early morning running will gradually awaken the normal operation of the body's various functions by way of exercise, so that the whole day will be particularly energized, and things will not feel procrastinated, the benefits of early morning exercise is that you can make a whole day of the spirit of the special head of the whole day, a whole day of the spirit of the whole day decided to do things efficiently, so the early morning exercise is the best time to do it.
Because running will allow the body to enter an active state, all parts of the body is in an active state when it is not easy to sleep, so some people run at night is more impact on sleep, the movement will make the brain congestion, the cerebral cortex is more active is not easy to enter a good state of sleep, even if you fall asleep, the impact of the body is also there, often run at night people will be It is particularly easy to do nightmares, long time is a burden on the body, so it is not recommended to run in the night time hours fitness.
So combined with the above points, summer running time should be chosen in the early morning, the first to avoid direct sunlight, the second will not affect sleep, the third early morning running to a certain extent can be awakened to all parts of the body's functions, so that the normal work, in this whole day, the whole body will be revitalized, so that the day's work and study to get more efficient completion, early morning exercise, air Fresh air, the health of the body will only increase and not decline, so the time period of the summer exercise is best chosen in the early morning.