Tonya says...
Maintaining your fitness is recommended for both a healthy delivery and recovery. So long as you are having a complication-free pregnancy, you should definitely exer-cise regularly. Still, your goal should not be to get in shape while pregnant, but to maintain your current level of fitness. Talk to your doctor about what is right for you before starting or continuing an exercise program. It's usually safe to aim for about 30 minutes of mild exercise each day. Mix it up with cardio and flexibility training. And check with your gym—many offer prenatal exercise classes. How much weight you gain depends on your pre-pregnancy weight—if you were under, over or average weight. The typical breakdown of weight gain is usually: baby, 6 to 8 lb.; maternal body fluid, 4 lb.; maternal blood volume, 3 to 4 lb.; amniotic fluid, 2 lb.; uterine enlargement, 2 lb.; maternal breast tissue, 1 to 2 lb.; and placenta, 1.5 lb.

Tonya Rouse Hillenbrand is a certified fitness and nutrition expert, and a former national triathlete and duathlon team member. Click here to send her your questions.