1. Coffee contains certain nutrients. Nicotinic acid in coffee contains vitamin B, and the content of roasted coffee beans is higher. And there are free fatty acids, caffeine, tannic acid and so on.

2. Coffee is good for the skin. Coffee can promote metabolic function, activate digestive organs, and has great effect on constipation. Taking a bath with coffee powder is a kind of thermotherapy, which has the effect of losing weight.

3. Coffee has a hangover relieving function. Drinking coffee after drinking will quickly oxidize acetaldehyde converted from alcohol, decompose it into water and carbon dioxide and excrete it.

4. Coffee can relieve fatigue. To eliminate fatigue, we must supplement nutrition, rest and sleep, and promote metabolic functions, and coffee has these functions.

5. Three cups of coffee a day can prevent gallstones. For caffeinated coffee, it can stimulate gallbladder contraction and reduce cholesterol that is easy to form gallstones in bile. Recently, researchers at Harvard University in the United States found that men who drink two or three cups of coffee a day have a lower chance of getting gallstones than 4%.

6. Drinking coffee often can prevent radiation injury. Radiation damage, especially the radiation of electrical appliances, has become a prominent pollution. Indian atomic researchers in Baba got this conclusion in mouse experiments and said it can be applied to humans.

7. The health care function of coffee. Coffee has antioxidant effects.

8. The influence of coffee on mood. Experiments show that the average person absorbs 3 milligrams (about 3 cups of brewed coffee) a day, which will have a good influence on a person's alertness and mood.