It doesn't work. Eat more fruits and vegetables, eat well in the morning, eat well at noon and eat less at night. Drink a cup of warm boiled water or honey water in the morning and eat meat at noon or in the morning. As for exercise, you can go out running, skipping rope, doing sit-ups and dancing and drinking tea in the morning and evening to lose weight. Drinking a cup of Pu 'er tea before and after meals can keep your body warm and avoid fat accumulation.