Nowadays, winter travel is becoming fashionable. However, if you don't pay attention to the changes of weather, especially the influence of cold climate on human body, you may be attacked by some diseases. Among the tourists, some are from the south to the north, some have more outdoor activities, and some are elderly and infirm, who especially need cold and antifreeze. \xd\\xd\ When traveling outdoors in winter, the skin of exposed parts or distal parts of human body (such as fingers, toes and cheeks) may be stimulated by cold and humidity for a long time, and erythema may appear on the skin with abnormal sensation, which may develop into blisters and ulcers in severe cases. If you stay in a cold environment for too long, it will not only cause skin damage, but also cause systemic diseases. In a cold environment, the incidence of heart disease, stroke, flu, chilblain, arthritis and other diseases will increase significantly. In winter tourism, the weather with low temperature and humidity, high air pressure and high wind speed is very common. When the temperature drops from zero to below zero, the number of people with colds will increase sharply in a short period of time, including many young people. Chronic bronchitis may also recur in cold and dry climate. \xd\\xd\ In order to prevent frostbite, it is very important to keep warm clothes. The outermost clothes should be windproof, and woolen, fur or leather clothes can be selected; A relatively stagnant air layer can be formed in the down jacket, which has good warmth retention and is the first choice for winter tourism. Underwear should be soft, hygroscopic and breathable, so as to facilitate moisture retention and drying. It is necessary to minimize the exposed parts of the skin, and it is necessary to exercise or massage frequently for the parts prone to frostbite. \xd\\xd\ If you want to travel in winter without being hurt by the cold climate, it is essential to enhance your cold-proof ability. Adjusting diet and increasing body metabolism is an effective method to improve the body's heat production capacity. In fact, in order to maintain body temperature in a cold environment, the human body must increase its metabolism, and it takes a lot of physical strength to travel. Only by increasing the intake of nutrients can it meet the needs of the human body. In winter tourists' diet, the intake of protein, carbohydrate and fat, as well as minerals and vitamins, is higher than usual, so we can't place too much emphasis on limiting the intake of fat and carbohydrate as usual. Lean meat, eggs, fresh fish, bean products and animal liver are good for supplementing human body heat, so they can be eaten more appropriately. In addition, we should correct the misconception of drinking to keep warm. Alcohol and water can't produce heat. On the contrary, alcohol can stimulate blood vessels on the body surface, increase blood circulation on the body surface, and make people feel "hot". In fact, the human body is losing heat.