If the purpose of exercise is health, it is best to exercise from 4 pm to 6 pm. This time is the best time for people's physical strength. If it is best to lose weight by training on an empty stomach in the morning, the weight loss effect will double at this time. There is nothing wrong with exercising at night, but people who are weak and sick should not exercise at night, because night is the worst time for people's physical strength, and exercise before going to bed is easy to get excited and affect sleep.
Extended data:
Matters needing attention in physical exercise:
First, avoid exercise under strong light: around noon, the sun is in the sky and the temperature is the highest. In addition to swimming, avoid exercise at this time and beware of heatstroke. In summer, the ultraviolet rays in the sun are particularly strong, and human skin can be burned by I ~ II after long-term exposure. Ultraviolet rays can also penetrate the skin and bones, radiate to the meninges and retina, and cause damage to the brain and eyeballs.
Second, avoid too long exercise time: an exercise time should not be too long, generally 20 ~ 30 minutes is appropriate, so as not to sweat too much, and the body temperature will rise too high and cause heatstroke. If you exercise for a long time, you can arrange 1 ~ 2 breaks in between.
Third, avoid drinking a lot of water after exercise: sweating a lot in summer, so drinking a lot of water will increase the burden on the blood circulation system, digestive system, and especially the heart. At the same time, drinking water will make you sweat more and further lose salt, which will cause convulsions, cramps and other symptoms.
Fourth, avoid taking a cold bath immediately after exercise. Because the heat generated by summer exercise increases rapidly, the capillaries of the skin also expand a lot, helping the body to dissipate heat. Sudden supercooling stimulation will suddenly close the pores that have been opened on the body surface, leading to disorder of internal organs of the body, abnormal temperature regulation of the brain, and even illness.