Is tea good for the human body?

　　Is tea good for the human body?

　　It is not good to drink too strong tea because it contains a lot of coffee Because, theophylline, etc. are very irritating and can cause insomnia, headache, tinnitus, dizziness, and are not good for the stomach and intestines. Some people will also feel vomiting. Drinking overnight tea is not good, because most of it breeds a lot of bacteria. Drinking cold tea is not good, because cold tea has the disadvantages of stagnating cold and gathering phlegm. Drinking hot tea or overheated tea is extremely harmful to the human stomach.