Sit-ups, a form of exercise, have an unparalleled effect on thin belly. Moreover, exercise is the healthiest and greenest way to lose weight, so doing sit-ups every day can not only slim out the stomach, but also strengthen the body and make the body better, which can be described as killing two birds with one stone. Correct practice method of sit-ups to reduce stomach. Lie on your back, put your legs together, raise your hand, contract your abdominal muscles, swing your arms forward, and quickly become a sitting position. Keep your upper body bent forward, touch your feet with your hands and bow your head. Then return to the sitting position. So continuous.