Is coffee harmful to health?

Always refer to coffee as harmless to the body. Coffee, especially black coffee, diuresis and drainage.

But too many quotations will hurt your stomach. In fact, any excessive food will be harmful to your health.

Whether coffee is refreshing depends on a person's physique. Some people will feel refreshed after drinking half a cup.

I drink four cups of pure black a day, and I still feel nothing when I sleep at night.