Does the thought of lifting weights in a big gym prompt cringing? Well, you're not the only mom who feels that way. Reese Witherspoon ditches the traditional gym environment but isn't giving up on a good workout. Recently spotted heading to class, the mom of three has a long-term love affair with post-natal Pilates, saying that it allows her to lose the weight and reshape her body slowly but healthily. One major perk of Pilates is that it can help reduce the back and neck pain that women commonly experience during pregnancy. If your goal is to get your abdominal muscles back to their pre-pregnancy strength, Pilates is one of the best options out there.