Aren't you afraid of cold and health in winter?

This is not to say that if a person's thermoregulatory center is not good, that is, if he doesn't know whether it is hot or cold, he is prone to get sick ... but that sentence is not unreasonable ... A person who often takes a cold bath, including winter, has a strong ability to keep out the cold, is not easy to catch a cold, and is not too afraid of the cold. He can get through the winter with two or three clothes, which can be said to be relatively healthy ... Hehe, high school students are healthy.