Gentle and regular exercise during pregnancy is usually safe and healthy, but pregnant women should avoid vigorous sports and running. Exercise can reduce stress and improve sleep. It also prepares you and your body for birth. When exercising, wear comfortable clothes and shoes, drink plenty of water and get plenty of rest. Pregnant women should stop exercising and seek medical care IMMEDIATELY if they feel pain, have bleeding, or unusual discharge from their vagina.
Attribution: Straight Talk Foundation