Routine exercise for most pregnant women is healthy and, according to the American Congress of Obstetricians and Gynecologists, it may be beneficial for your changing body. Getting 30 minutes of exercise every day is great for improving your strength and endurance (both will help during labor, as well as during your postpartum attempts to recover your pre-pregnancy body). Exercise may help to lift your mood, reduce pregnancy symptoms (including those unwelcome backaches, constipation and bloating), decrease your chances of developing gestational diabetes, and help you sleep.
Despite the persistent myth, exercise won't increase your risk of miscarriage. If you're just starting, ask your healthcare provider for help in developing an appropriate exercise program to follow during your pregnancy. If you already exercise regularly, be sure to discuss your routine with your doctor, as there are some modifications you may need to make while you're pregnant.