Q: Is it safe to do sit-ups and abdominal crunches during pregnancy?
A: Medical studies have established that exercising during pregnancy is a beneficial activity. But the question is, which type of exercises are fit for expectant mothers?
According to scientific studies, it is okay to do sit-ups during the first four months of pregnancy, before your stomach becomes very large. Light to moderate exercises is good for your body. Always start slowly and monitor your breathing. Make sure to exercise in a cool, comfortable atmosphere. Stop immediately if you feel a sudden discharge from your vagina or if you feel any pain in your abdomen area. As always, it is recommended to visit your doctor to and consult him on what exercises are best for you and the child inside your womb.
Lying flat on your back tends to lower your blood pressure, which could inhibit the blood supply and about 6 to 10 percent of pregnant women experience rapid drops in blood pressure when they lie down -- even if it's only for a few minutes. The problem can begin in early pregnancy, though it's more likely to occur after 20 weeks.
If you really want to work your abdominal muscles, a better exercise would be to get on the floor on your hands and knees and alternate arching your back up and relaxing it.