1. Black coffee is low in calories. Black coffee contains only about 2 calories per 100g. After drinking coffee, the calories in the body can be consumed quickly.

2. Black coffee contains a lot of caffeine, caffeine and other ingredients. After drinking, it can promote the body's metabolism and accelerate the body's fat metabolism, which is very good for weight loss.

3. Black coffee can play a diuretic role after drinking, which can accelerate the excretion of metabolites and water dampness in the body, which is very beneficial to weight loss, especially for people who are wet and obese.