Gargling with tea can prevent influenza, help the body resist external viruses, and inhibit tumor growth. The specific gargling method: gargle once after getting up and once after returning home each day. Hold the tea in your mouth for 15~20 seconds, then spit it out, repeating this two or three times.
Tea has 'harmed' us with eternal youth

Research results indicate that antioxidants in green tea and black tea can completely destroy the transmission pathways of chemicals in cancer cells. An American magazine reported that black tea's anti-aging effects are stronger than garlic, broccoli, and carrots.
Tea has 'harmed' us by eliminating osteoporosis

Tea drinkers have stronger bones. The polyphenols in tea (also found in green tea) inhibit substances that destroy bone cells. To prevent and treat osteoporosis, it is recommended to drink a small cup of tea daily, with noticeable effects after several years. Adding lemon to tea strengthens bones even more effectively.
Tea has 'harmed' us by improving blood circulation

Heart disease patients who drink 4 cups of tea daily can increase their blood vessel dilation from 6% to 10%. Tea contains various water-soluble vitamins, rich trace elements potassium and manganese, and a type of flavonoid compound.
Tea has 'harmed' us with abundant energy

Tea can refresh the mind, improve concentration, make thinking reactions sharper, and enhance memory. At the same time, it promotes sweating and diuresis, accelerating the excretion of lactic acid (the substance that makes muscles feel fatigued) and other waste materials in the body, thereby achieving fatigue relief.
Tea has greatly reduced the global incidence of cancer

The claim that tea leaves have anti-cancer effects is widespread, and researchers worldwide have conducted many explorations on this. It was generally believed that tea's anti-cancer effects were mainly attributed to green tea, but now there is new progress. Research has found that black tea, like green tea, also has strong anti-cancer efficacy.
Source: Tea Information