For those who are preparing for marathon and long-distance running, summer training has an unexpected benefit: improving their heat stress ability. You can think of this ability as heat resistance, that is, when you have this ability, you can keep warm in hot weather without ignoring it. It is necessary to warm up before exercise. Note that warm-up can not only warm up the body, but more importantly, let the blood of the body be quickly transported to the limbs (in a relatively quiet state, most of the blood is in the stomach), and replenish water and electrolytes several times when the nerves are excited to exercise. ?

Don't drink a lot of water at a time. On the one hand, it is easy to increase the burden on the heart, on the other hand, it is easy to accelerate the loss of electrolytes and lead to cramps. Therefore, in order to adjust the constant temperature, the human body will greatly stimulate the speed of blood flow, and the body will release a lot of sweat and take away most of the water. If you don't replenish water in time, it will cause water shortage in your body and cause a state of shock. First of all, the gym is air-conditioned in summer.

After all, if the room temperature is not well controlled, it will become a sauna in minutes, which may lead to death. Imagine everyone's sweat and body odor, and the muscular man in the equipment area is full of breath. There is no air conditioning in summer, so you can't drink too much water after exercise. Drinking plenty of water after exercise will increase the burden on the blood circulation system, digestive system, and especially the heart, which will make you more tired. The result of drinking plenty of water will only be more sweating, further loss of salt, causing convulsions and cramps.

In particular, try to avoid outdoor sports at noon when the sun is strong and at 2 pm, because ultraviolet rays are particularly strong during this time, which will burn the skin and even stimulate the retina and meninges. Besides, it is too hot in summer to exercise excessively. Exercise can be "step by step", as long as the total time of exercise every day exceeds 30 minutes. Summer is coming. If you look at your body carefully, you will find that the blood vessels in your body are more outward than in winter, and the blood vessels are more obvious. Even if you don't exercise at ordinary times, your body sweats more. Pay attention to hydrating during exercise and don't exercise excessively.