Not high. A cup of100g black coffee is only about 2.55 kilocalories, so the calorie of black coffee is still very low. It is suggested to drink a cup of black coffee after meals, which can promote the decomposition of fat. Coffee contains caffeine, which can increase the concentration of fatty acids in the blood. When the concentration of fatty acids in blood rises, fatty acids will be quickly absorbed by muscles and converted into energy needed by the body to be consumed, thus promoting body fat.

Note: Don't use instant coffee, and don't add milk or sugar when drinking. Black coffee is more irritating to the stomach, so it is best not to drink it on an empty stomach; Hot coffee is more effective than cold coffee. Hot coffee can help you burn calories faster. It is worth mentioning that drinking too much black coffee will make people fidget, increase their heart rate and raise their blood pressure. Timely and appropriate amount is the correct way to lose weight with black coffee. It is advisable not to exceed 3 cups a day.