Personal experience tells you, cut off the intake of sugar and starch, don't eat any fruit (both cucumbers and tomatoes are ok), don't drink dairy products and don't eat soy products, add a cucumber and one or two boiled eggs with some cherry tomatoes or a tomato for breakfast, eat lean broilers, ducks, fish, beef, mutton and shrimp for lunch and dinner, eat vegetables such as green vegetables, lettuce, cabbage and broccoli, control to be full at six or seven minutes, and walk for an hour after dinner every day. If you weigh 6-8kg a month, you should take a good pill or other vitamin supplements every day. Of course, if you can cooperate with exercise, the effect will be better, but because you don't eat much, don't exercise too hard.