"Covering in spring and freezing in autumn will not cause miscellaneous diseases" is a proverb for health care and disease prevention, which means to advise people not to take off their cotton-padded clothes in spring and not to wear too much when they are cold in autumn. Proper covering or freezing is good for their health.

From a modern point of view, this proverb is also reasonable.

In the long-term evolution of human beings, influenced by the periodic changes in spring, summer, autumn and winter, a physiological heat dissipation and warmth retention function has been formed in the body. In winter, in order to resist the cold, human epidermal sweat glands and pores are closed. When the east goes and the spring comes, the pores gradually wake up from the "hibernation", the skin becomes active, and the degree of pore atresia is correspondingly reduced. Therefore, when the spring breeze is strong, although it is not very cold, it can drive directly into the body, giving people the feeling of "chilly spring". In this case, people may catch a cold or suffer from other diseases. Coupled with the unstable weather in spring, it is easy to catch a cold if you take off your cotton coat too early or wear too little.

The cooling in autumn is a gradual process, and people gradually add clothes to adapt to the external environment. Without moderate cold stimulation, putting on cotton-padded clothes too early is not conducive to health.

Of course, "spring covering" and "autumn freezing" should be suitable for people, at the right time, moderately and not rashly.

You should also pay attention to your health. If it is sometimes hot or cold, you should know how to be cold and how to be hot. After all, being cold or hot for a long time is not good for your health.

If I'm not mistaken, this should be the after-class question in the biology book of senior three.