Pilates is a non-impact workout that increases flexibility, strength and muscle tone, and is safe to practice during pregnancy.
Because it focuses on your core, practicing Pilates on a regular basis can improve posture, alleviate backaches, and ultimately help with labor and delivery. Plus, it will boost your mood and energy levels. Choose a prenatal class if you can. Otherwise, let the instructor know you're pregnant so she can help you modify or skip any risky moves.
Remember, once you’re in your second trimester, avoid exercising on your back. The weight of your uterus can press on the vena cava, which is the main vein that carries blood from your lower body to your heart. Compressing it can interfere with both your and baby's circulation.