Drink a cup of warm water first, then coffee, and then a cup of pure oatmeal in the morning. It is the same at noon and in the morning. A cup of coffee in the afternoon and a cup of coffee in the evening should be finished before 6 o'clock. Otherwise, if you can't sleep at night, if you are really hungry at night, eat a cucumber. Coffee is a glass of water with1.8g of coffee. In fact, losing weight by coffee is a topic of discussion.