Abdominal pain after sit-ups may be caused by abdominal muscle strain and lactic acid accumulation, etc. Clinically, there is no quick recovery method, but it can be relieved by proper rest, hot massage and taking medication. 1. rest: after sit-ups, abdominal pain symptoms, it is recommended to stop exercising immediately, appropriate rest, to promote the recovery of muscle strain and lactic acid metabolism, can effectively alleviate the symptoms of abdominal pain. 2. Hot massage: You can massage the abdomen with hot compresses to promote local blood circulation and the decomposition of lactic acid, which can effectively relieve the symptoms of abdominal pain. 3. Take drugs: When the pain symptoms are more obvious and unbearable, you can choose pain medication under the guidance of the doctor to relieve pain, such as ibuprofen extended-release capsules. When exercising, it is recommended to exercise within a reasonable range and not to overdo it. If pain symptoms occur after exercise, it is recommended to go to the hospital for examination and diagnosis, and under the guidance of the doctor to carry out the correct treatment.