The cold climate in winter affects the endocrine system of human body, which increases the secretion of thyroxine and adrenaline, thus promoting and accelerating the decomposition of protein, fat and carbohydrate, increasing the body's cold-proof ability, thus causing excessive loss of heat.

Protein, fat and carbohydrates are called thermogenic nutrients. Therefore, the intake of staple food and oil should be appropriately increased in winter to ensure the supply of high-quality protein. Dog meat, mutton, beef, chicken, venison, shrimp, pigeon, quail, sea cucumber and other foods are rich in protein and fat, which generate more calories and have the best cold-proof effect.

2, beginning of winter health should pay attention to vitamin supplements.

Winter is the off-season for vegetables. Therefore, after a winter, people often have vitamin deficiency, such as vitamin C deficiency, which leads to oral ulcers, root swelling and pain, bleeding, constipation and other symptoms. Then people can eat some potatoes properly, such as sweet potatoes and potatoes. They are all rich in vitamin C, vitamin B and vitamin A, and red sweet potatoes also contain more carotene. Eating more potatoes can not only supplement vitamins, but also clear the fire.

3. Traditional customs

(1) Eat jiaozi.

Jiaozi's original name is said to be Joule, which was first invented by Zhang Zhongjing, a medical saint in China. The story of his "Quhan Joule Decoction" is still circulating among the people in China. "beginning of winter acted recklessly in jiaozi bowl, and no one cared whether his ears were frozen." beginning of winter means that winter is coming, and it's cold, so his ears are easily frostbitten. Therefore, it is the most considerate care for his family to eat jiaozi. jiaozi looks like his ears.

(2) Winter swimming

Interestingly, the way to celebrate beginning of winter is also innovative. During their stay in Harbin and beginning of winter, the athletes of Heilongjiang Winter Swimming Association crossed the Songhua River to welcome the arrival of winter in this way.

For winter swimmers, there must be a certain foundation, step by step, insist on going into the water every day, and continue to exercise when the weather is warm. In addition, winter swimming should choose a place that is familiar with the waterfront. If you are not familiar with the situation in the water and on the shore, don't go into the water easily to avoid accidents. Besides, in order to take care of each other, we should walk together.