But green tea is cool, the stomach is not good, and people with poor sleep should use it with caution. Drinking too much tea will interfere with the absorption of protein and iron, so it is best to drink tea after meals 1 hour. Green tea contains powerful antioxidants and vitamin C, which can not only eliminate free radicals in the body, but also secrete hormones against stress. A small amount of caffeine contained in green tea can stimulate the central nervous system and cheer up the spirit.
Green tea retains the natural substances of fresh leaves of plants and contains many nutrients such as tea polyphenols, caffeine, amino acids and vitamins. Moreover, research shows that tea has a series of pharmacological effects, such as refreshing, clearing away heat and relieving summer heat, reducing fire and relieving annoyance, and caring skin.
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Other value functions of green tea
1. anti-aging
It is helpful to delay aging. Tea polyphenols have strong antioxidant and physiological activity, and are free radical scavengers in human body. Studies have proved that 1 mg tea polyphenols is equivalent to 9 micrograms of superoxide dismutase in scavenging excessive free radicals harmful to human body, which is much higher than other similar substances.
2. Suppress diseases
Tea polyphenols can inhibit cardiovascular diseases and play an important role in human fat metabolism. Tea polyphenols, especially catechins ECG and EGC in tea polyphenols and its oxidation products theaflavins, are helpful to inhibit this mottled proliferation, reduce the formation of fibrinogen that enhances coagulation viscosity, make coagulation clear, and thus inhibit atherosclerosis.
3. Beauty and skin care
Tea polyphenols are water-soluble substances, which can remove facial greasy, astringe pores, sterilize and disinfect, resist skin aging, and reduce the damage of ultraviolet rays in the sun to the skin.
4. diuresis to relieve fatigue
Conducive to diuresis and relieve fatigue. Caffeine in tea can stimulate the kidney, promote the rapid excretion of urine, improve the filtration rate of the kidney and reduce the retention time of harmful substances in the kidney. Caffeine can also eliminate excessive lactic acid in urine, which helps to eliminate fatigue as soon as possible.
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People's Network-Tired and dozing off? Four refreshing drinks will refresh you.