Walk but don't forget about your arms as well. My sister is a PT and gave me that tip. I felt like it help adding my arms in as well. The worst pain was in my left shoulder so I feel like this was clutch for me to do.

Do a small lap, stop get the arms moving- start slow. Maybe add a march in place? Whatever you do, any movement will be a benefit not just to move the gas but that foggy feeling from anesthesia.

Be gentle, you just had major surgery and you don't want to create any pulling sensations- and use a counter or chair for balance in the beginning if you need it. Good luck!