If people who get angry in summer still have symptoms of stomach upset, then drinking black tea is the best choice. Black tea is made after fermentation and contains more caffeine than green tea, which can refresh the mind and induce diuresis. Black tea can also regulate the stomach, so people with bad stomach and easy to get angry can drink some black tea properly.

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

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People who should not drink black tea:

1, stone patients, tumor patients. Patients with stones are generally not allowed to drink black tea.

2, anemia, mental weakness, insomnia. The refreshing effect of black tea will aggravate their insomnia symptoms.

3. People who are usually easily excited or sensitive, have poor sleep and are weak. Because black tea has a good refreshing effect.

4, people with stomach heat. Because black tea is warm tea, it plays a role in warming the stomach.

5. People with thick tongues, people with bad breath, people with acne and people with red eyes. Black tea is "hot". People who are afraid of getting angry should not drink black tea.

6. People who are taking medicine. Black tea will destroy the efficacy.

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