The research shows that before 6 o'clock in the summer morning, various harmful substances such as nitrogen oxides and hydrocarbons produced by coal burning and automobile exhaust gather in the air, which is the peak of pollution. Breathing these dirty air will have harmful effects on human body. Therefore, the morning exercise time in summer should not be earlier than 6 o'clock.
Fitness in dog days must pay attention to methods. You can do some light exercise at night, such as walking, Tai Ji Chuan, and just sweat a little.
In addition, under the scorching sun, the eyes are the most vulnerable organs. If you want to go out from 10 to 4 pm, you'd better wear sunglasses, a hat or an umbrella. Dark brown and light green sunglasses have the best anti-ultraviolet effect.
Precautions for morning exercises in dog days include:
1, the choice of sportswear
Light-colored clothes can reduce the absorption of heat and make them cooler to wear; Dark clothes will absorb more heat energy, which makes them sultry. Cotton products are superior to chemical fiber products in heat absorption and sweat absorption. So light cotton is the best sportswear in summer. The looser the style, the better the heat dissipation performance, and the lighter the color, the less likely it is to absorb heat.
2. Control the intensity of exercise
In summer, the human body consumes a lot of energy, so the intensity should be controlled during exercise.
3, timely and appropriate hydration
In summer, people sweat more and lose more salt, which is easy to reduce the osmotic pressure of cells. Therefore, it is very important to replenish water in summer exercise in time. It is best to replenish water several times, and drink 10 to 15 minutes 150 to 200ml during exercise. But don't drink too sweet drinks, so as not to increase the burden on the stomach. You should also replenish water in time after exercise, but don't drink too much at a time.