Just purchased a Pilates exercise book and am wondering if there are any exercises that should be avoided or modified for a person who last year fractured T7 and T8 vertebrae. Pinching a nerve is very, very painful and I wish to avoid this. I would say that my core muscles have been on "holiday" for most of my 51 years. I'm trying to retrain my posture however old habits die hard and I keep forgetting. Can Pilates help pelvic floor sag? (Dr. suggested that it would probably need to be "fixed" via surgery in the future - no mention of other ways to correct the problem.)