1, "three winters" are winter melon, winter jujube and winter sugarcane. Among them, wax gourd contains a lot of dietary fiber, which helps to reduce blood sugar, cholesterol and blood lipid and prevent atherosclerosis. Wax gourd is high in potassium salt and low in sodium salt, which is also a good diet therapy for patients with hypertension. Winter jujube is rich in nutrition, and contains 9 kinds of essential amino acids, especially vitamin C, such as aspartic acid and threonine, which can improve human immunity and prevent colds. In addition, it is rich in sugar and cyclic adenosine monophosphate, which can reduce the damage of various chemicals to the liver and effectively protect the liver.

2, sugar cane can nourish blood and moisten dryness, not only refreshing, but also clearing away heat and reducing qi, tonifying the lungs and benefiting the stomach. Sugarcane contains a large number of essential trace elements such as iron, calcium, phosphorus, manganese and zinc, among which the iron content is particularly high, and it is known as "blood-enriching fruit". After winter, many office workers often feel dizzy and sleepy, and their reaction ability decreases. Eating some sugar cane is of great benefit at this time.

3. In addition, some warm food, such as trout, pepper, cinnamon, pepper and so on. Isothermal foods such as glutinous rice, sorghum, sword bean, shepherd's purse, asparagus, ginger, onion, jujube, longan, litchi, papaya, cherry, almond, mutton, dog meat, chicken, eel and sea cucumber are all suitable for eating in cold season.