Abdominal exercises during pregnancy are really helpful in improving strength of abs muscles. Swimming is one of the best exercises for abs. Most of the pregnant women feel cramps in their abdomen which could be due to any reason. These cramps can be avoided if regular moderate exercise is adopted by the pregnant women. According to the American College of Obstetrics and Gynecologists, if moderate exercise is continued for thirty minutes daily then it could keep pregnant women away from pregnancy discomforts like stresses and aches.