First, stand more and sit less, and don't lie down if you can sit; Second, ensure that you walk 6000 steps every day to consume excess calories in your body; Third, take a deep breath when you are free. When inhaling, bulge your stomach and stop for a while. When exhaling, suck the stomach hard and hold it for a while. Often abdominal and waist fat will be reduced, and your abdomen will be much flatter. Fourth, do 10 sit-ups every day and persevere.