Drinking black tea can quench thirst and relieve summer heat, because polyphenols, sugars, amino acids and pectin in tea react chemically with saliva, and stimulate saliva secretion, resulting in moist mouth and a cool feeling; At the same time, caffeine controls the temperature center of the hypothalamus and regulates the body temperature. It also stimulates the kidney to promote the excretion of heat and dirt and maintain the physiological balance in the body.

2, refreshing and exhausting

Black tea contains a lot of caffeine and tea polyphenols, which can excite the nerve center, promote refreshing and concentration of thinking, thus making the thinking response more acute and enhancing memory; It also has an exciting effect on the vascular system and the heart, strengthens the heartbeat, and thus accelerates blood circulation for metabolism.

3, anti-oxidation, anti-aging

Antioxidants in black tea can completely destroy the propagation path of chemicals in cancer cells. The antioxidant of black tea is much more complicated than that of green tea, especially beneficial to the heart.