It’s best, of course, to avoid sports with risks of injury or where a ball or other equipment could hit you in the stomach, Labonté-LeMoyne warns. Other than that, she recommends continuing activities you did before pregnancy. Water sports, like swimming or water aerobics, have an added advantage of increased blood return, which can help if you’re at risk for hypertension or have a tendency to have swollen legs and ankles. More from Prevention: Yoga Poses For A Better Pregnancy