Protein food gives you the longest satiety (that is, you won't feel hungry soon, so you won't eat much ...).
Food with the same calorie, if it enters the stomach in the form of soup, will give you a longer satiety than solid food.
Drinking water before meals has little effect on appetite, but drinking soup helps.
Actually, losing weight is nothing more than eating less and exercising more. The above can help you eat less, but you should exercise more! ! ! !