Usually sit as little as possible. It doesn't matter if you have to sit, but pay attention to whether you are standing or sitting, and try to tighten your abdomen. Yoga Yu's "boat style" is also very effective for your lower abdomen. Lie flat for a few minutes before going to bed every day, try to lift your head and legs, straighten your waist and support your whole body. It is also important to keep the stool unobstructed and eat more high-fiber foods such as celery, leeks, apples and kiwis. ...