Why is it so cold at night now?

Hehe, the temperature has dropped. Suddenly from summer to autumn to winter, people have to adapt, so they will feel cold, and the Siberian cold wave is coming! Can't help it! This weather is the easiest to catch a cold! So pay attention! The direct point of sunlight is in the southern hemisphere, so the height of the sun is smaller at noon in all parts of the northern hemisphere, and the sunshine time is shorter. The speed of land cooling is fast, especially in the high pressure area, which leads to the prevalence of northwest wind. Chinese mainland is widely affected by cold air. If you want to be less cold, you can do more exercise and soak your feet. You can try to keep your baby warm and add clothes. The earth's orbit around the sun is an ellipse close to a perfect circle, and the sun is located at a focus of the elliptical orbit, so that the distance between the sun and the earth is constantly changing in a year or even a day. In cold weather, we should first do a good job of keeping warm and dressing appropriately to ensure that the body can exchange energy and materials with the outside world. Besides, we shouldn't always shut ourselves in the room because of the cold weather. We should often go to the outside world for proper activities. When our body is outside, the hypothalamus will be stimulated, which will release hormones to the pituitary gland and give instructions. When the pituitary gland receives instructions, it will release a thyroid stimulating hormone. After receiving instructions, the thyroid gland will release a lot of thyroid hormones, which can promote the metabolism of the body and accelerate the release of energy. As long as we often go outdoors to exercise, we can keep the thyroid hormone at a certain level, and our bodies will not feel cold. When the weather is cold, you can also eat some high-protein foods to provide the body with energy for normal metabolism. Eat more nuts and carrots, and keep your body warm through daily supplements, such as nuts such as walnuts, sesame seeds and pine nuts. Vegetables such as leeks, carrots, kale, spinach, etc. ; Fruits, such as apricots, peaches and papaya, are the best choice. Others such as beef and mutton, seafood, four gods, glutinous rice, brown rice, soybeans, tofu, sesame seeds and brown sugar are all warm foods, so people with cold hands and feet should eat more. What needs special reminder is that people who are prone to cold hands and feet should avoid eating cold food, iced products or drinking cold drinks all year round, and cultivate the habit of eating spicy food, such as pepper, pepper, mustard, garlic, shallots and curry. , can promote blood circulation. When using the usual diet, such as eating fried noodles and fried rice noodles, add Chili sauce; Add more pepper when drinking soup; When you eat jiaozi, you can eat a lot of spices with a bowl of hot and sour soup. Often eat some warm food, such as ginseng tea, ginger duck, longan tea, black sesame seeds, sweet dumplings and so on. Eating in winter can not only warm the body, but also nourish the body gradually, and the hands and feet can no longer be cold. There are many drugs in Chinese medicine that can improve and prevent cold hands and feet, such as ginseng, codonopsis pilosula, angelica, salvia miltiorrhiza, northern cape, velvet antler, rabbit silk, Morinda officinalis, cassia twig, cistanche deserticola, curculigo, cassia twig, ephedra, dried ginger, pepper, nutmeg, Alpinia katsumadai and so on. Traditional Chinese medicine also has fixed prescriptions for treating cold hands and feet, such as Shiquan Dabu Decoction, Bazhen Decoction, Sijunzi Decoction, Siwu Decoction, Lizhong Decoction, Guizhi Jianzhong Decoction, Fuzi Lizhong Decoction, Guizhi Decoction, Gegen Decoction, Mahuang Decoction, Danggui Sini Decoction, Shenqi Pill and Gui You Pill. These traditional Chinese medicines are usually more suitable for people with deficiency-cold constitution. If you are not sure, you can also find a prescription from Chinese medicine. Keep warm. Don't wear warm clothes less because you love beauty or are afraid of being laughed at for wearing too much. All kinds of warm-keeping measures, such as coats, wool hats, gloves, scarves, masks, sanitary clothes, socks, etc., should be fully worn in cold weather. Before you take off your coat, you must make sure that it is getting hot. Don't take off your warm clothes immediately because of mental irritability, nervousness, hot flashes, or fever after activities. Don't wear too tight clothes either, because too tight clothes will hinder blood circulation. Before going to bed at night, remember to put on warm wool socks to help your feet keep out the cold. It should be noted that if your feet lose temperature, it is not easy to fall asleep. When you are free, you can take more baths. Adding ginger or chamomile, basil, cinnamon, rosemary and other essential oils and pepper bath agents to hot water can promote blood circulation and warm your body. When taking a bath, you can alternately shower your hands and feet with cold water and hot water, and achieve the purpose of dredging blood through the expansion and contraction of blood vessels from cold to hot. Soaking hands and feet with hot water before going to bed can also promote peripheral blood circulation and help you fall asleep. Don't forget to dry your feet with a towel immediately after soaking, and put on warm socks quickly. ''