Why is the hotter the weather, the easier it is to catch a cold?

It's too hot. In order to dissipate heat, sweat glands are in a relaxed state. Sometimes entering the room will be stimulated by cold air, so it is easy to catch a cold. And on a hot day, everyone turns on the air conditioner indoors, and the air is not circulating. All kinds of bacteria, fungi and viruses began to multiply in large numbers, and finally invaded our respiratory tract, causing cold symptoms of stuffy nose and runny nose, which in turn led to what we call air conditioning disease. Moreover, in hot weather, everyone likes to eat some foods with ice, which will stimulate our gastrointestinal tract, cause diarrhea and abdominal pain, and accompany the occurrence of cold symptoms. If the weather is too hot, all kinds of influenza viruses will be popular, which is mainly related to the epidemic history of influenza viruses. Not only is it easy to get sick in winter, but it is also easy to cause physical changes in spring and summer.

There is also that if our body immunity is too low, it is easy to catch a cold. Because it is too hot in hot weather, everyone doesn't want to exercise, and their appetite is not very good. This will cause our body's nutrients to be unavailable and our body's immunity will be low. Skin and mucous membranes are our first line of defense. Secondly, our body's immune system is low. If there is no human health defense against bacteria and viruses, the body will be diseased.

Moreover, the temperature difference between day and night is large, which is easy to cause a cold. The temperature here is relatively low in the morning. It's noon, and you can sweat after two steps. Some people wear less clothes in the morning and catch a cold when they catch a cold. I think the key is to strengthen immunity, eat more fruits and vegetables at ordinary times, and the temperature should not be too high in the morning and evening, so you can go out for running and exercise. Keep the indoor air circulating.