Summer is coming, what knowledge do you have to avoid the heat and cold?

In recent days, the weather temperature in Hefei has basically remained around 30°, giving people the illusion that summer has arrived. Some people are so unbearable in the heat that they even turn on the air conditioner at night. Although summer is coming, these cold knowledge about heatstroke prevention must be mastered in advance.

The first thing is to drink as much hot water as possible in summer. My friends’ favorite thing to drink in summer is cold drinks. If you drink it slurpingly, it will immediately cool you from head to toe. It feels so good. But as everyone knows, drinking cold drinks will constrict our blood vessels and prevent the body's heat from being dissipated for a while. If things go on like this, it may even induce gastroenteritis, angina pectoris and other problems.

On the contrary, drinking hot water not only warms the stomach, but also promotes the secretion of our sweat glands, speeds up the dissipation of body heat, and plays a role in removing heat. But one thing to say, don't drink too hot water, otherwise you may be thirsty by the time you drink it.

Then eat some spicy food. You may not think that spicy food can also have a cooling effect, but in fact it does. When we eat spicy food, the body will sweat a lot, which not only has a cooling effect, but also eliminates excess toxins from the body. But remember, don’t eat too much spicy food, otherwise it will hurt your spleen and stomach.

Secondly, it is recommended that we wear dark cotton clothes in summer. It has been said for a long time that dark clothes have greater heat absorption capacity, but some people tried to expose red, black, and white clothes to the sun for 30 minutes. After 30 minutes, the temperature of the white clothes was measured to be 37.2°, and the temperature of the black clothes was 37.2°. The temperature of the clothes is 36.9°, while the red clothes are only 36.4°.

Obviously, it has been proven that white clothes absorb the most heat, while dark clothes have weaker heat absorption capabilities. At the same time, studies have shown that "the SPF of cotton clothing is 15-40, the SPF of light-colored polyester clothing is 7-10, and the SPF of light-colored knitted clothing is 4-9." So what clothes to wear next must be unknown to everyone. knew.

In addition, warm water baths dissipate heat faster than cold water baths. After we exercise strenuously in the summer, many of us like to take a cold shower to cool down. But when we take a bath with cold water, the pores in the body will close quickly, and the heat cannot be dissipated for a long time. We may also catch a cold due to the stimulation of the cold water. Therefore, the best choice is to take a bath with warm water, which will not cause discomfort due to too much heat, but can also make the heat dissipate faster and achieve a refreshing feeling throughout the body.

Finally, the mental cooling method is really effective in removing heat. As the saying goes, "A calm mind will naturally cool down." Many friends think this is a joke, but in fact, this saying has scientific basis. Because our mood swings will affect the production of heat, when we are calm, our adrenaline secretion will decrease, the sympathetic nerve excitement will decrease, the body's metabolism will slow down, and the production of heat will decrease accordingly.

Have you mastered all the above knowledge about how to avoid the heat and cold in summer? If you want to have a cool and healthy summer, then hurry up and start learning.