Eating less advocated by weight loss does not mean not eating, mainly reducing staple food and supplementing non-staple food; Reduce the high-fat diet and replace the cellulose diet. TCM health experts have long put forward the theory of "eat less and live longer". Zhang Hua of Jin Dynasty pointed out in the Natural History: "The less you eat, the richer you get, the richer you get;" The more you eat, the more blocked your heart will be, and the harder the years will be. In particular, it is an effective measure to prevent obesity to advocate "don't eat enough at night" and eat less, especially less dinner. Because after eating a lot of food for dinner, the food can't be digested, and there is little activity, which is easy to cause overnutrition, and fat deposition will make you fat. So you can't lose weight without eating. Eating less can reduce weight, but you must not be partial to food.