It is very important to control your diet, eat less and eat more, especially snacks, and you can't eat dinner. It is important to eat less or not directly. If you are really hungry, eat some fruit and yogurt, then do exercise, swim or walk for an hour. It's valid for one month. I try not to sit or lie down for a while after meals, or walk slowly. I lose too much weight in a short time. My method will definitely affect my health, but I won't lose weight at once. It will be more obvious if you persist for a long time. My uncle has been insisting on it for many years, from 180 to 120.