The most important thing to lose weight is dieting. I lost ten pounds at the earliest 15 day. At that time, I didn't bother to go downstairs to buy food during the dormitory holiday. Prepare some yogurt, brown sugar, biscuits, baby noodles and lettuce every day. Breakfast yogurt is made of brown sugar and a few biscuits, and half noodles and lettuce are boiled with water to put seasoning. Dinner, like lunch, can also be replaced by sweet potatoes. Every meal is slow, there are no snacks, and you can't sit and do all kinds of light sports for half an hour after eating (dancing is the most useful, followed by hula hoop and shuttlecock). That's about it. I hope it works for you.