The water-soluble black tea powder has a delicate and elegant taste, fine powder and good solubility. In addition to direct drinking, it has many effects. Caffeine in black tea stimulates the nerve center by stimulating the cerebral cortex, which promotes refreshment and concentration of thought, which makes the thinking reaction more sensitive and memory enhanced. It also has an exciting effect on the vascular system and heart, strengthens the heart beat, and accelerates the blood. The cycle promotes metabolism, promotes sweating and diuresis, and accelerates the elimination of lactic acid (the substance that makes the muscles feel tired) and other old waste materials in the body.

Drinking black tea in summer can quench thirst and cool down because the polyphenols, sugars, amino acids and pectins in tea react chemically with the mouth and stimulate the secretion of saliva, which causes the mouth to feel moist and cool, and the caffeine control The body temperature center of the hypothalamus regulates body temperature. It also stimulates the kidneys to promote the excretion of heat and dirt and maintain the physiological balance in the body. In addition, black tea is also an excellent sports drink, in addition to quenching thirst and replenishing water, if you drink before exercise (such as a marathon) that requires physical strength and endurance, because the caffeine in tea has a refreshing effect.