No, according to the information of Zhihu official website Fitness Module, it is impossible to exercise abdominal muscles by hitting the abdomen with a hammer, which will also cause pain. If the blow is severe, there will be intestinal diseases. Exercise abdominal muscles, you can exercise flat support and sit-ups. Abdominal muscles are an important part of human connective tissue, including rectus abdominis, oblique abdominal muscles, oblique abdominal muscles and transverse abdominal muscles. When they contract, they can bend and rotate the trunk to prevent the pelvis from leaning forward.