Swelling will return with exercise too soon after tummy tuck
Tummy tuck has the longest recovery, especially with significant muscle repair and tightening, and exercise should be delayed a full four to six weeks after. Swelling and irritation will return if you push into exercise too soon, much like trying to run on a sprained ankle. You can walk and start slowly with low impact activities such as a recumbent bike which will take the stress off your back and abdomen. Whatever you do, if it causes discomfort or swelling, stop.
Best of luck...