1, coffee can eliminate drowsiness and refresh. Because coffee contains a lot of caffeine, caffeine is a stimulant, which can stimulate the central nervous system, heart and other organs, making them in a relatively excited state, thus relieving fatigue and eliminating drowsiness. However, it is recommended not to drink coffee after meals, otherwise it may cause persistent nervous excitement and lead to insomnia.

2. Coffee can help digestion. Some substances contained in coffee can promote gastric acid secretion, effectively promote intestinal peristalsis and help digest food accumulated in the body. It can also relieve indigestion and loss of appetite.

3, coffee can diuretic swelling. Caffeine can promote the discharge of excessive sodium ions in the body, and drinking plenty of water is also conducive to detoxification, thus increasing urination, relieving constipation, promoting metabolism, and also playing a good role in detumescence.

4, lose weight and lose weight. Caffeine can promote metabolism, improve cell vitality, speed up the operation of various functions of the body, accelerate the discharge of harmful substances in the body, accelerate fat burning, and play a certain role in slimming and reducing fat. This is why many people who exercise drink black coffee. At the same time, it can also regulate pigment metabolism and achieve a certain beauty effect.

5. Coffee can also prevent cardiovascular diseases and Alzheimer's disease to some extent. In many western countries, coffee is regarded as a culture. Medical research shows that coffee is beneficial to many organs and systems, and it can also protect the liver and reduce the risk of cancer to a certain extent, and coffee also has anti-inflammatory and antioxidant effects. At the same time, coffee can also help regulate fat metabolism and play an important role in lowering blood lipids.