Can't you sleep if you drink coffee? Does coffee affect sleep?

One: why can't you sleep after drinking?

Because coffee contains caffeine, caffeine stimulates the cerebral cortex, eliminates drowsiness, increases feeling and thinking, and can be used as a cardiotonic to regulate heart function, as well as dilating kidney blood vessels and diuresis. However, caffeine is not just coffee. Usually a cup of coffee with 60-65mg caffeine. But excessive caffeine intake is prone to tinnitus and myocardial hyperactivity (the heart beats rapidly and the number of pulses increases). And the pulse is uneven, so you must drink the right amount of coffee.

Whether caffeine in coffee has a great influence or not varies from person to person. For example, some people are allergic to pollen, while others are not suitable for eating seafood. And these two situations will not have any effect on most people like you and me. As for how much coffee to drink every day, in some large coffee consumers, people consume an average of about 250-600 milligrams of caffeine a day. After repeated scientific research and analysis, this dose has no side effects on the human body. Therefore, you can drink 4-10 cups of instant coffee every day.

Second: what is the effect of drinking coffee on health?

What many people worry about is whether the caffeine in coffee has any effect on health. In fact, caffeine is a softer stimulant in coffee, it can improve the sensitivity and attention of the human body, accelerate the metabolism of the human body, and improve the mental state and physical fitness of the human body. At present, caffeine has been found in about 60 plants, of which tea and coffee are the best known. In some large coffee-consuming countries, people consume an average of about 250-600 milligrams of caffeine a day. After repeated scientific research and analysis, this dose has no side effects on the human body.

Three: you won't drink too much coffee every day.

People often ask, how much coffee is too much? In some large coffee consuming countries, people consume an average of about 250 to 600 milligrams of caffeine a day. After repeated scientific research and analysis, this dose does not have any side effects on the human body. Because the amount of caffeine in a cup of coffee (150ml) is generally:

-- ground coffee: about 80-90 ml

Instant coffee: about 60 milliliters

In some large coffee-consuming countries, people consume an average of about 250-600 milligrams of caffeine a day. After repeated scientific research and analysis, this dose has no side effects on the human body. The caffeine content in a cup of instant coffee (about 150 milliliters) is generally about 60 milligrams, so drinking 4-10 cups of instant coffee a day will not be excessive.