"Cover spring and freeze autumn, don't have miscellaneous diseases" is to advise people not to take off their cotton-padded clothes in spring and don't wear too much when they see cold in autumn. Proper covering or freezing is good for their health.
Extended data:
Scientific truth:
1, spring cover
In spring, the temperature of nature is rising, but the indoor temperature can't keep up with the outdoor because of the thermal inertia of the house, resulting in the temperature difference between indoor and outdoor. This temperature difference reaches its maximum in the sunny afternoon of a day, often as high as 3-5℃ or even more.
Especially when walking into a cool room from the warm sunshine, the elderly and patients must put on clothes and spring clothes to avoid catching cold and getting sick. As the temperature rises (falls) fastest in China in spring (autumn) at the same latitude, China's unique health proverb "Spring covers autumn" was born.
Winter goes and spring comes, which is a transitional stage from cold to hot. Although the weather is getting warmer, the climate often changes, sometimes warm and sometimes cold. Often after the sun comes out, it will be warm and sunny, and it will be cold when it is windy and rainy.
Because people are used to wearing more clothes in winter, if they take off too much in spring, they will not adapt to climate change and get sick easily. Therefore, in the early spring, you should deliberately cover a little and slowly reduce your clothes.
Step 2 freeze in autumn
Autumn is a transitional period between summer and winter, and autumn freezing is to enhance the human body's tolerance to cold in order to cope with the more cruel winter. If you put on cotton-padded clothes too early at this time, you will not be able to exercise and enhance your resistance.
The core of TCM theory is the unity of man and nature, and the human body and nature are an organic whole, which are inextricably linked. When the changes of the human body are consistent and synchronized with the laws of nature (such as the alternation of spring and autumn), the human body maintains a healthy state of yin and yang. Once this rule is broken, it means that the health balance of human body is destroyed. If it is allowed to develop further, various diseases will be formed.
Therefore, as long as the temperature is not lower than 20 degrees Celsius (usually in August and September of the lunar calendar), people should let their bodies freeze properly, which can promote blood circulation and strengthen the body's defense mechanism. At the same time, autumn freezing can also prevent sweating and illness due to excessive clothes.
Remind everyone that if the temperature is lower than 15℃ for more than two weeks, you can put on your autumn and winter clothes.
References:
Baidu encyclopedia is covered in spring and frozen in autumn
People's Daily pays attention to "freezing in spring and freezing in autumn". How to "freeze in autumn" to be healthy?