Muscle healing after a tummy tuck
The standard answer for your question is six weeks. It takes that amount of time for the muscles to heal adequately so that you are no longer relying on the sutures to hold them in place. Any strenuous exercise or heavy lifting prior to six weeks risks tearing out the muscle stitches causing bleeding and bulging. Muscle spasms are not unusual after a tummy tuck but are normally short-lived. If they are a problem, talk to your surgeon about a trial of muscle relaxants.