Mom and baby alike may benefit from exercise

A thoughtful exercise program is good for both mother and child, according to medical experts.

"We know that women who exercise during pregnancy have less chance of developing certain conditions like gestational diabetes," said Dr. Raul Artal, chairman of obstetrics, gynecology and women's health for the Saint Louis University School of Medicine. "Not only that, exercise maintains musculoskeletal fitness. Women can cope with the anatomical and physiological changes of pregnancy better when they're in good shape. They also tolerate labor better and recover more quickly from delivery."

The baby also benefits. One study found that when an expectant mother works out, her fetus reaps cardiac benefits in the form of lower fetal heart rates.