Coffee is a beverage made from roasted coffee beans. Coffee beans contain many substances, including fatty acids, caffeine, tannic acid, etc., among which caffeine has a great influence on human body. The main functions of caffeine on human body are to accelerate metabolism, accelerate intestinal peristalsis, accelerate blood circulation, stimulate gastric acid secretion and diuresis. Drinking coffee in moderation can keep people's brain and nervous system excited, and it also has an exciting effect on the respiratory center.
Drink coffee in moderation. If you drink a lot of coffee for a long time, it may lead to insomnia, rapid heartbeat, memory loss, calcium loss in the body, excessive gastric acid secretion, addiction and other problems. In severe cases, it may even have adverse consequences such as heart damage and edema.