I have had spinal fusion from l4 to s1 best thing to do is plenty of walking and swimming after the operation.

Get off the pain meds as fast as you can and let the pain guide you as to what you can and can't do.

Like others have said do what the doc tells you to do and just dont sit around the house, get up and get moving.

I was back refereeing soccer and playing cricket within a year of my op.