First, it can promote the decomposition of hidden fat.

Caffeine in coffee will increase the concentration of fatty acids in the blood. Once the concentration of fatty acids in blood increases, fatty acids will be absorbed by muscles and consumed in the form of transforming into body energy. In other words, drinking coffee can promote the decomposition of fat accumulated in the body for a long time.

Second: the heat is very low.

A cup of100g black coffee has only 2.55 kilocalories. Therefore, drinking a cup of black coffee after a meal can not only accelerate the decomposition of fat, but also avoid worrying about excessive calorie intake.

Third: Black coffee helps to eliminate edema.

Caffeine has diuretic effect, which can increase the amount of urination, expel excess water from the body and improve edema. But it should be noted that too much caffeine will affect blood pressure and sleep quality. Usually one cup in the morning and one cup after lunch is enough.

Fourth: Drinking black coffee often can clear the stool.

Some scientists believe that coffee is a faster and gentler laxative than crude fiber food, and it is effective for at least13 people, especially women. The ingredient that helps defecation is a rapid "humoral hormone" or neurotransmitter mechanism. The experiment found that only 4 minutes after drinking coffee, the movement of the large intestine began to strengthen, and this effect of promoting gastrointestinal peristalsis was strongest in the morning and weakened at night.

Black coffee has always been called "the messenger of health", and its main effects on health are as follows: 1. Caffeine can stimulate the central nervous system, make the mind clearer, have abundant thinking ability, concentrate and improve work efficiency; 2. Caffeine can make muscles contract freely and improve motor function. 3. appetizing and digestion caffeine stimulates gastrointestinal secretion of gastric acid, which can promote intestinal peristalsis, help digestion, prevent gastroptosis and have a rapid laxative effect. 4. Liqiao dehumidification caffeine can promote renal function, discharge excess sodium ions in the body, increase urination and improve abdominal distension and edema.

However, there are some disadvantages, 1. Supplementing caffeine when you are nervous is helpful to improve your alertness, sensitivity, memory and concentration. But if you drink more coffee than you are used to, you will have the same dose of stimulants, which will cause tension. For people with anxiety tendency, caffeine can aggravate the symptoms of sweating, palpitation and tinnitus. Caffeine, which induces osteoporosis, has a good diuretic effect. If you drink a lot of coffee for a long time, it will easily lead to bone loss, which will adversely affect the preservation of bone mass and may increase the threat of osteoporosis in women. But the premise is that there is not enough calcium intake in food at ordinary times.

Black coffee can lose weight to some extent, but it should also be moderate.