We almost always repair the muscles, that is, do a fascial plication to tighten the abdominal wall fascia and muscles to get a tighter, flatter tummy. On occasion I have treated a patient who has loose skin but no fascial laxity or diastasis recti (muscle separation), and in those cases I have not repaired the muscles. Certainly the muscle repair is the most painful part of the tummy tuck. A patient whose complaint is in regard to the loose skin only and who would like to avoid the muscle repair can do so. However, most patients want the most improvement if they are going through this significant surgery, so it is not as common to leave the muscles unrepaired. Again, I would assume that you and the surgeon discussed this at the preoperative consultation and pre-op appointment.