Black tea is a relatively common tea. We may all drink black tea in our daily life. Black tea also has many useful functions. Black tea and green tea also have different functions, so we like to drink black tea and green tea. People are also different. So, what are the effects and functions of drinking black tea in general? What are some ways to drink black tea?

1. Eliminate fatigue

The caffeine contained in black tea excites the nerve center by stimulating the cerebral cortex, so it has a refreshing effect. It has an exciting effect on blood vessels and heart, and can speed up blood circulation. Promote metabolism, accelerate the excretion of lactic acid (a substance that makes muscles feel tired), and have the effect of eliminating fatigue.

2. Prevent colds

The flavonoids in black tea can kill poisonous bacteria in food and make influenza viruses lose their infectivity. In addition to preventing colds, gargling with black tea also has good effects when you have a sore throat due to a cold.

3. Prevent thrombosis

The polyphenolic antioxidants contained in black tea have obvious anticoagulant and fibrinolytic effects, and can prevent the formation of blood clots.

4. Anti-inflammation and sterilization

The catechins in black tea can combine with bacteria to coagulate and precipitate their proteins, thereby inhibiting and eliminating pathogenic bacteria. Therefore, feeding black tea to patients with bacterial dysentery and food poisoning is beneficial to their condition; among the people, black tea is also commonly used to smear patients with bedsores and tinea pedis.

5. Diuretic

Black tea contains caffeine and aromatic substances. The combined effect of the two can increase the blood flow of the kidneys, expand the renal capillaries, and improve the glomerular filtration rate; at the same time It can inhibit the reabsorption of water by the renal tubules, leading to an increase in urine output, which is beneficial to the excretion of lactic acid, uric acid, salt and other harmful substances in the body.

6. Keep out the cold

Black tea is warm in nature and sweet in taste. It has the effect of generating heat and warming the abdomen, and can enhance the body's ability to adapt to cold, so it is recommended to drink black tea in winter. And black tea contains relatively few tea polyphenols, which is irritating to the spleen and stomach and has a stomach-balancing effect on people with weak spleen and stomach.

7. Regulate blood sugar

Thearubigins and theaflavins contained in black tea can promote the body's production of insulin, which can help regulate blood sugar stability and effectively prevent and treat myocardial infarction.

8. Anti-aging

Theaflavins and thearubigins in black tea have strong antioxidant properties. After drinking, they can effectively alleviate the damage of free radicals to the skin and cardiovascular system. damage and fight aging.

9. Anti-cancer

Experimental studies have shown that black tea can block the formation of carcinogenic compounds nitroso compounds, with a blocking rate of 65. Regular consumption of black tea can reduce the risk of skin cancer.

10. Prevent osteoporosis

After brewing black tea, 70% of potassium can be dissolved in the tea water. Black tea also contains manganese. Potassium can prevent or reduce the consumption of calcium in the body, and manganese is also one of the indispensable elements of bone structure. Therefore, drinking black tea regularly can help prevent osteoporosis.

11. Prevent memory loss

Within a certain range, the level of acetylcholine in the human body is positively correlated with memory. For example, Alzheimer's disease patients have very low levels of acetylcholine in their brains. Drinking black tea can maintain acetylcholine levels in the brain and prevent memory loss.

12. Black tea is suitable for people

Because black tea has the effect of warming the stomach and strengthening the spleen, it is suitable for people with weak and cold constitutions. It is most suitable to drink sweet and warm black tea in the cold winter. of.

13. How to make black tea

1. Boil fresh cold water to make tea

The water flowing out of the faucet is full of air. When used to make tea, the aroma of black tea can be absorbed. Fully guided out. Black tea is best brewed with fresh water after boiling. Tea brewed with overnight water, water that has been boiled twice or hot water in a thermos has lost its original flavor and is not suitable for making tea.

2. Clean the tea sets with boiling water first

Pour boiling water into the teacups and teapots, and gradually warm the teapots and teacups to avoid excessive changes in water temperature.

The reason why the body of the teapot is rounded is to allow the tea leaves to have room to fully expand when brewing, so that the aroma can be dispersed more easily.

3. The content of tea should be moderate

Generally, one teaspoon (about 2.5 grams) of tea leaves can be used to brew a cup of black tea with a strong aroma, but if you want to brew more For pure black tea, it is best to brew black tea with two teaspoons of black tea leaves, so as to better bring out the mellow original flavor of black tea.

4. Make tea as soon as the water boils

In about 30 seconds after the hot water begins to boil, the water splash formed resembles a one-yuan coin and the black tea is brewed. This temperature It is the most suitable.

5. Let the tea simmer for a while after brewing

Quickly brewed tea cannot release the aroma of the tea for a while, so after brewing, the tea can be simmered for a while according to the concentration of the tea. Drinking, generally speaking, the concentration of tea is divided into one to four levels, with level one being the weakest and level four being the strongest. The brewing time decreases from two minutes to three and a half minutes.

6. Season and drink according to taste preferences

People who don’t like original black tea can try adding honey, milk, and lemon to black tea for seasoning and drinking. It should be noted that although black tea has low tea polyphenol content, it has been matured and has weak irritation. It is suitable for drinking at night and for people with weak stomach. Adding some milk when drinking black tea can have a certain stomach-warming effect.