It is not recommended to drink black coffee in the morning on an empty stomach, because the substances in coffee will stimulate the secretion of gastric acid in the body, which will have a great impact on the digestion and absorption of gastric function. And black coffee is also rich in energy and sugar, if you drink black coffee in the morning on an empty stomach, it is easy to cause fat at the same time, and drinking black coffee in the morning on an empty stomach will also have a certain impact on the heart, because coffee will increase the burden on the heart. In the morning it is recommended to drink soy milk, rice paste, milk, millet porridge and other easy to digest food, in the stomach at the same time also help the body’s digestion. Coffee can be drunk between meals, for example, at 10:00 a.m. or 3:00 p.m. every day. Drinking coffee between meals does not affect the absorption of the stomach, and can also play a refreshing role in the work.