Sit-ups If you can only sit-ups and can't sit-ups, try skipping rope. 18 years old, buy a counting skipping rope and stick to it for 20 minutes every day. In the process of skipping rope, it is good to suck and shrink your stomach. At the same time, at the age of 18, you can still see whether you are at a high point! In addition, open your legs, keep your mouth shut, don't eat too much before going to bed at night, and don't think about taking diet pills, which is unreliable and harmful to your health!

If you have a big belly because of heavy moisture in your body, you can get rid of it and refuel, and you will lose weight.