Certain people should be careful of drinking coffee.

Studies have shown that drinking 2 to 3 cups of coffee a day is good for your health. But for some specific people, it is not suitable to drink coffee every day, such as hypertension, cardio-cerebrovascular disease, osteoporosis, gastrointestinal diseases, tumor patients, mental anxiety, etc., otherwise it may aggravate the harm to the body. In addition, breakfast and nap every day is the most suitable time to drink coffee. Because of the exciting and stimulating effect of coffee on the human body, it can be maintained for 4-6 hours. Drinking coffee during these two periods can make the human body maintain a good working and mental state in the morning and afternoon. But try not to drink coffee after 05:00 in the afternoon, which may seriously affect normal sleep.