Benefits of drinking black tea in winter:

1, warming stomach

Winter is the coldest season in a year, and the physiological function of human body decreases due to cold, which leads to the decline of human body's resistance. Black tea belongs to post-fermented tea, and the caffeine that stimulates the stomach and intestines has been reduced during fermentation, and it will not stimulate the gastrointestinal tract. In addition, black tea is also rich in theaflavin isothermal substances, so drinking black tea has a good stomach warming effect, which can help the body resist the cold and enhance immunity.

2, regulate the stomach

Compared with other seasons, winter is a period when people exercise less and eat more meat. Drinking black tea can promote digestion, decompose meat and fat, and regulate the metabolism of sugar, fat and water, which has a very important regulating effect on the stomach.

3, clean up the stomach

In winter, people not only have a great appetite, but also store substances in their bodies, which makes them extremely fat. For people who like to eat big fish and big meat, drinking more black tea can not only eliminate greasy and clean up the stomach, but also help to lower blood fat, protect blood vessels and prevent obesity.

4. Beauty

For girls, it is easy to get cold hands and feet and cold body in winter. Drinking black tea regularly can improve the metabolic capacity of the human body and play a role in promoting blood circulation and warming the body. At the same time, black tea contains theaflavins, theanine and tea polysaccharides, especially rich in compound flavonoids, which has strong activity, can remove excess free radicals in human body, slow down cell aging and play a role in beauty.

5. Reduce blood pressure and blood sugar

Theanine in black tea can inhibit the increase of blood pressure; Alkaloids and flavonoids can relax the blood vessel wall, increase the effective diameter of blood vessels, and reduce blood pressure by relaxing blood vessels; Theaflavins can soften blood vessels and effectively remove atheromatous substances from blood vessel walls, so they are called "scavengers" of cardiovascular diseases. The unique tea polysaccharide in Anhua black tea has similar effect to insulin, which can reduce the blood sugar content in human body.

Tea polyphenols and their oxidation products in black tea can dissolve fat, promote the discharge of lipid substances, thereby reducing cholesterol in blood, thus reducing the deposition of fat on arterial wall and reducing the incidence of arterialization; It can also activate protein kinase, accelerate fat decomposition and reduce body fat content.

Extended data

Preservation method of black tea

Under the condition that black tea storage needs ventilation, dryness and no peculiar smell, if the tea leaves get wet due to improper placement, the following methods can be adopted. But if there are black mold, green mold and gray mold, don't drink it, which means that the tea is moldy. Keeping ventilated and dry is the most important thing in collecting and storing black tea. Because black tea belongs to submerged fermentation (fully fermented tea), it is also necessary to accelerate aging at a certain humidity.

If the humidity is too high and the time is too long, the tea will be moldy and white hairs will appear. You should take it out in time and take it to a ventilated and dry place. It can also be dehumidified (just turn on the air conditioner) or dried. After a few days, the moldy hair will disappear naturally. If the white hair is serious, you can use soft textiles such as brushes and towels to remove the white hair on the surface, and then use heating appliances such as hair dryers to heat it for more than ten minutes. But if it is black mold, green mold and gray mold, it is bad tea.

People's Daily Online-Drinking black tea in winter helps to warm the stomach. It is suggested that five groups of people drink more black tea.

Baidu Encyclopedia-Black Tea (Preservation Method)