1, do sit-ups. The best angle is 45 degrees, 50 times a day. 2, massage the abdomen. Massage clockwise around the navel every morning and evening 10 minute. 3. Do simple yoga abdominal breathing before going to bed every night, inhale and abdomen, exhale and abdomen, stop for one minute and repeat. This is called gas friction. 4. Stand with your feet slightly apart, tighten your lower abdomen, and lift your hips at the same time. Relax after 5 minutes and do it several times a day. If you want to lose weight, you must work hard, otherwise no amount of methods will be in vain.