Bitter coffee has a refreshing brain, promote intestinal peristalsis effect, but does not have the efficacy of drugs. 1. Refreshing: bitter coffee is rich in nutrients, the caffeine content is very high, can excite the body’s sympathetic nerves, enhance the ability to think and react, but also make the mental state become better, fatigue symptoms are relieved. So appropriate to drink some bitter coffee can assist in refreshing the brain. 2. Promote intestinal peristalsis: bitter coffee in the cocoa butter, fiber, caffeine and other ingredients are relatively rich, can enhance the gastrointestinal tract peristalsis. Drinking bitter coffee can also promote the secretion of digestive juices, accelerate the gastrointestinal tract emptying speed. Note: food does not have a therapeutic effect, bitter coffee can not prevent and treat diseases, if the body is not feeling well, it is recommended to seek medical attention.