Benefits.

1. Coffee contains certain nutrients. The nicotinic acid of coffee contains vitamin B. Roasted coffee beans contain more. And there are free fatty acids, caffeine, tannins, etc. 
2. Coffee is good for the skin. Coffee can promote metabolic functions, revitalize the digestive organs, and is very effective for constipation. Bathing with coffee powder is a kind of warm therapy and has the effect of weight loss. 
3. Coffee has the function of relieving alcohol. Drinking coffee after alcohol will cause the rapid oxidation of acetaldehyde transformed from alcohol, decomposed into water and carbon dioxide and excreted. 
4. Coffee can eliminate fatigue. To eliminate fatigue, it is necessary to supplement nutrition, rest and sleep, and promote metabolic function, and coffee has these functions. 
5. Three cups of coffee a day can prevent gallstones. For coffee containing caffeine, can stimulate the gallbladder contraction, and reduce the cholesterol in the bile easy to form gallstones. 
6. Drink coffee often to prevent radiation damage. Radiation damage, especially the radiation of electrical appliances has become a more prominent pollution 
7. Coffee's health care medical function. Coffee has antioxidant and heart protection, strong muscles and bones, lumbar and knee, appetite and promote food, fat elimination and elimination of stagnant, liqueur and remove dampness, blood circulation, restrain wind and stop spasm. 
8. The influence of coffee on mood.

Bad points. 

1. Add confusion when nervous
Caffeine helps to improve alertness, sensitivity, memory and concentration. However, drinking more coffee than you are used to, will produce the same dose of stimulants, which can cause nervousness.
2. Exacerbates high blood pressure
Because of its own pain-relieving effects, caffeine is often combined with other simple painkillers, but when taken in large amounts over a long period of time, if you already have high blood pressure, using large amounts of caffeine will only make your situation worse.
3. induce osteoporosis
Caffeine itself has a very good diuretic effect, if long-term and large amounts of coffee, easy to cause bone loss, the preservation of bone mass will have a negative impact.