1, caffeine improves fat burning ability
Black tea contains caffeine, which can decompose fat, decompose accumulated body fat into blood, and double the burning power of fat during exercise. Caffeine also has diuretic effect, which can stimulate the kidneys, dilate blood vessels, improve water metabolism and discharge excess water and old waste. Caffeine can also activate the secretion of gastric juice and promote digestion, but people with bad stomach should be careful not to take too much!
2. thearubigins and theaflavins are heating up.
After fermentation, the original catechin is oxidized into thearubigins and theaflavins, which can warm the body and have a good preventive effect on cardiovascular diseases. Moreover, black tea is sweet and mild, and the burden on the stomach is not so great, but tea is still irritating and should be drunk moderately.
3. The weight loss principle of green tea
Green tea contains aromatic compounds, which can dissolve fat, remove turbidity and greasy, and prevent body fat accumulation. Vitamin B 1, vitamin C and caffeine can promote the secretion of gastric juice and help digestion and fat elimination. Drinking green tea can also increase the metabolism of body fluids, nutrients and calories, strengthen microcirculation and reduce fat deposition. Theophylline and caffeine in green tea can reduce fat accumulation and have no destructive effect on probiotics in human intestine.
4. Catechin helps to relieve boredom and reduce fat.
In the case of excluding caffeine, catechins in tea can also promote metabolism and continue to help fat metabolism.
Catechin is the source of astringency of green tea. In fact, both green tea and black tea contain catechins, but at present, it is considered that the content of catechins in unfermented green tea is high. Catechins can enhance heat energy production, promote fat oxidation and 24-hour heat consumption rate, stimulate fat hydrolysis and inhibit the activity of pancreatic lipolytic enzymes. Drinking 1 cup of green tea after meals can prevent the rapid rise of blood sugar and reduce the secretion of hormones that help fat accumulation.
5. Lower blood pressure and cholesterol.
Tannic acid in green tea has a very obvious antihypertensive effect, which can not only inhibit the increase of blood pressure, but also lower blood pressure.
Some studies have also pointed out that tannic acid can remove excess cholesterol from blood, control the evolution speed of arteriosclerosis to a minimum, and help prevent brain thrombosis and myocardial infarction.