Generally speaking, we should not drink more than 50 grams of coffee every day. If you want to stay up late by drinking coffee, you may unconsciously drink too much, which is not good for your health. It usually takes half an hour to take effect and lasts for 3-4 hours.
You should drink coffee with less sugar. Coffee itself is a high-calorie drink. If you drink coffee with too much sugar, the calories will double. Drinking this coffee for a long time will make people fat. Don't drink coffee before bed. Caffeine in coffee can make people excited, and drinking coffee before going to bed may keep you awake for a long time.
Extended data
The doctor warned not to drink coffee on an empty stomach, because coffee can stimulate gastric acid secretion, especially for patients with gastric ulcer. Coffee, as a drink, should be properly drunk according to personal circumstances. Generally speaking, in nutrition, we still emphasize a balanced diet rather than spicy food.
Many doctors believe that drinking 1 ~ 2 cups (6 ~ 8 ounces each) of coffee, tea or carbonated drinks every day will not affect the fetus. But for the sake of caution, it is best for pregnant women to ban it. Caffeine can lead to an increase in abortion rate, so drink decaffeinated drinks.
Children should not drink coffee. Caffeine can excite children's central nervous system, interfere with children's memory and cause ADHD.
Baidu Encyclopedia-Coffee (one of the three largest drinks in the world)