First, green tea has a good refreshing effect. Because the caffeine contained in tea can excite people's central system, people can think very fast after drinking and forget fatigue.

Second, green tea can promote digestion, which is also due to caffeine. It can promote the secretion of gastric juice, so it can help digestion.

Third, green tea contains tea polyphenols, which can promote the cardiovascular system and have a cardiotonic effect.

Fourth, green tea can protect teeth. First of all, tea has the effect of washing teeth. Secondly, tea contains fluorine, which has a certain effect on dental caries and tooth protection.

Fifth, there are some polysaccharides in tea, which can resist aging, and green tea has anti-radiation effect.