Getting back in shape after nine months of getting bigger is every woman’s goal. But the new duties of taking care of a baby take priority and leave little time for exercise. Rushing into an active lifestyle and resuming your previous workout routine is not the way to go. New moms should avoid jumping exercises at least 4 to 6 months after giving birth, Andrea Claassen, a new moms and a certified personal trainer at SaFire Training, who specializes in 30-minute workout sessions, says. Depending on whether they ran before and/or during the pregnancy, it may take as long to come back to it. You have the let the pelvic floor, the muscular base of the abdomen attached to the pelvis, heal. Don’t do high impact activities because the uterus and other organs also need time to repair, she adds.