Exercise does wonders during pregnancy. It boosts mood, improves sleep, and reduces pregnancy aches and pains. It helps prevent and treat gestational diabetes and may keep preeclampsia at bay. It prepares you for childbirth by strengthening muscles and building endurance, and makes it much easier to get back in shape after your baby's born.
Before you begin exercising, remember that it is important to talk to your health care provider. If you are already exercising, you may be able to keep up with your routine and adapt it as you grow. Keep your heart rate under 140 beats per minute and avoid overheating, especially in your first trimester. Exercise and pregnancy usually work well together.