Effects:
1, refreshing fatigue
1) caffeine in black tea by stimulating the cerebral cortex to stimulate the nerve center, contributing to the refreshing, concentration of thinking, which in turn makes the thinking response sharper, memory enhancement;
2) it is also on the vascular system and the heart with the role of excitability, strengthen the heartbeat, thus accelerating blood circulation to facilitate metabolism, and promote sweating and diuresis, thus the two-pronged accelerate the excretion of lactic acid (which makes the muscles feel fatigue) and other body old waste material to eliminate the effect of fatigue. It also promotes sweating and diuresis, thus accelerating the excretion of lactic acid (the substance that makes muscles feel fatigued) and other old waste substances in the body in a two-pronged manner, achieving the effect of eliminating fatigue.
2, the heat
Summer drinking black tea can quench the thirst of summer, the mouth feel moisturized, and produce a sense of coolness; at the same time, stimulate the kidneys to promote the excretion of heat and dirt, to maintain the physiological balance of the body.
3, diuretic
In the black tea in the caffeine and aromatic substances under the joint effect, increase renal blood flow, improve glomerular filtration rate, dilate the renal microvessels, and inhibit renal tubular water reabsorption, which contributes to the increase in urine output. This is conducive to the elimination of lactic acid, uric acid (related to gout), excessive salt (related to high blood pressure), harmful substances, etc., as well as easing the edema caused by heart disease or nephritis.
4, anti-inflammatory sterilization
The polyphenolic compounds in black tea have an anti-inflammatory effect, and then by experiments found that catechins can be combined with unicellular bacteria, so that the protein coagulation and precipitation, so as to inhibit and eliminate pathogenic bacteria.
5, detoxification
The theophylline in black tea can adsorb heavy metals and alkaloids, and precipitation decomposition, which is the drinking water and food by industrial pollution of modern people, is not less than a gospel.
6, strong bones
In order to prevent and control common osteoporosis in women, it is recommended to take a small cup of black tea every day, insisting that the effect is obvious for several years. If you add lemon in black tea, strong bones, the effect is stronger, in black tea can also add a variety of fruits, can play a synergistic effect.
7, anti-aging
American magazines reported that black tea anti-aging effect is stronger than garlic, broccoli and carrots.
8, stomach stomach
Black tea is fermented and baked. Black tea not only does not hurt the stomach, but can nourish the stomach. Regular consumption of black tea with sugar and milk can anti-inflammatory, protect the gastric mucosa, and also have a certain effect on the treatment of ulcers.
9, diastolic blood vessels
A study of the U.S. medical community and black tea. The study found that heart patients drink 4 cups of black tea a day, vasodilatation can increase from 6% to 10%. Regular people, when stimulated, saw a 13 percent increase in diastole.
Expanded:
Precautions:
(1) The new tea also contains more caffeine, active alkaloids, and a variety of aromatic substances, which will also make the human central nervous system excited, with a neurasthenia, cerebral and cerebral vascular disease, patients should be moderate. Drinking, and should not drink before bed or on an empty stomach.
(2) Don't take medicines with tea; don't drink tea within one hour before and after taking medicines. Ginseng and American ginseng should not be consumed with tea. Avoid drinking strong tea to relieve alcohol; tea should not be drunk before meals; avoid drinking tea immediately after meals; avoid drinking strong tea for young girls.
Baidu Encyclopedia - Black Tea