What causes abdominal cramps when doing sit-ups?

Abdominal cramps during sit-ups may be caused by several factors: 1. Performing sit-ups for prolonged periods or with excessive force can keep the abdominal muscles in a state of continuous tension, leading to muscle strain and subsequent cramping. 2. Electrolyte imbalances—deficiencies or excesses of electrolytes such as sodium, potassium, and magnesium—can trigger muscle cramps. Appropriate supplementation of these electrolytes may help alleviate cramping. 3. Prolonged high-intensity abdominal training may cause overall physical fatigue, increasing the likelihood of cramps. 4. Inadequate blood supply to the abdominal muscles during sit-ups may also lead to muscle spasms and cramping. 5. Improper technique during sit-ups—for example, relying too much on the hands to push the body up rather than engaging the abdominal muscles—can contribute to cramping. To prevent and relieve abdominal cramps, it is recommended to adjust exercise intensity and duration appropriately.