Reasonable drinking tea is beneficial to human body, while unreasonable drinking tea is harmful to human body.
Drink tea before going to bed.
It is best not to drink tea within 2 hours before going to bed. Drinking tea will make you feel high, affect your sleep and even insomnia, especially the newly picked green tea. After drinking, the nerves are extremely excited and cause insomnia.
Drink a lot of tea before and after meals.
It is not advisable to drink tea for about 20 minutes before and after meals. If you drink tea, it will dilute the gastric juice and affect the digestion of food. Moreover, because tea contains oxalic acid, oxalic acid will react with iron and protein in food, which will affect the absorption of iron and protein by human body.
Drink strong tea after drinking.
Some people think that drinking strong tea can "sober up", which is a misunderstanding. Because people drink alcohol, the alcohol in the wine enters the blood through the gastrointestinal tract, first converted into acetaldehyde in the liver, then converted into acetic acid, then decomposed into carbon dioxide and water, and excreted through the kidney. After drinking strong tea, caffeine in tea can quickly play a diuretic role, thus promoting acetaldehyde (a substance that has a great stimulating effect on the kidney) to enter the kidney prematurely and damage the kidney.
Excessive drinking of new tea
New tea refers to tea that has been picked for less than a month. This kind of tea has good shape, color and taste, and it is really a pleasure to drink. However, due to the short storage time of tea, there are many polyphenols, alcohols and aldehydes. If you drink new tea for a long time, you may have abdominal pain and bloating. At the same time, new tea also contains highly active tannic acid and caffeine. Excessive drinking of new tea will make the nervous system highly excited, which may lead to "tea drunkenness" such as weakness of limbs, cold sweat and insomnia.
Drink inferior or deteriorated tea.
Tea is not easy to keep properly, and it is easy to absorb moisture and become moldy, and some people are reluctant to discard moldy tea out of their love for saving tea. Deteriorated tea contains a lot of substances and germs harmful to human body, and it is absolutely inedible. If high-quality tea leaves are left for too long after soaking, the tea soup will also deteriorate due to oxidation and microbial reproduction, and such tea can no longer be drunk.
Yin tou Dao cha
Because modern tea is inevitably polluted by pesticides, fertilizers, dust and other substances in the process of planting, processing and packaging. The first sip of tea is actually the water for washing tea, so you should rush into boiling water as soon as possible, so that the tea brewed is the most hygienic tea.
Drink overnight tea
You'd better drink tea at once. Tea leaves have been stored for a long time, which not only leads to the loss of nutrients such as vitamins, but also tends to be rancid and sick.
Drinking tea on an empty stomach
Drinking tea on an empty stomach will dilute gastric acid, inhibit the secretion of gastric juice, hinder digestion, and even cause palpitation, headache, stomach discomfort, dizziness, upset and other "drunken tea" phenomena, and affect the absorption of protein, but also cause gastric mucosal inflammation. If "tea drunkenness" occurs, it can be alleviated by taking candy or drinking some sugar water.