1. Caffeine to enhance fuel efficiency
Black tea contains caffeine, it can break down fat, the accumulation of body fat will be eliminated into the blood, so it will improve the fat burning when exercise. Caffeine also has diuretic effects, can stimulate the kidneys, dilate blood vessels, enhance water metabolism, discharge excess water and old waste. Caffeine can also activate gastric secretion, promote digestion, but people with poor stomach should be careful not to overdose
2. Thearubigins, theaflavins to warm up
After the fermented black tea process, the original catechins oxidized, converted to thearubigins and theaflavins, can warm up the body, and have a good preventive effect on cardiovascular disease, and sweet-green sweet temperature, the stomach Burden is not so heavy, but the tea is still irritating, to moderate drinking.
1. Drinking black tea at night, caffeine in black tea will cause headache, nervous, hard to fall asleep.
2. Black tea is warm tea, played the role of warm stomach, and is not suitable for stomach heat people.