Why is it easier to catch a cold when it is cold?

Cold weather means that the climate will become dry. People living in a dry environment for a long time will cause physical discomfort. The most common symptom is a cold. More than half of the human body is made up of water. The skin will be dry without water, and blood circulation needs water. In a dry environment, the water content of the human body will drop very quickly, affecting the operation of body functions, so it is easy to catch a cold.

When the weather gets cold, people have to adapt to this cold environment. Adding clothes is the most common practice. Because of the cold weather, we will wrap ourselves up when we go shopping. But after walking in the street for a while, our bodies will start to get hot because of exercise. At this time, if you feel that you are wearing too much, you will take off your clothes and unzip them alive. At this time, the cold air outside comes into contact with your hot body, and your body cannot adapt to the rapidly changing environment.

The temperature that the human body generally adapts to is in the range of 10 degrees to 20 degrees, and all the functions of the body are working perfectly. When the weather gets cold, our body's resistance is declining. To a certain extent, the body will give an alarm, that is, catch a cold.