Laura ~
My aging body would probably go into convulsions or something if I had the audacity to take it to a gym, but, seriously, I do understand the benefits and desirability of physical exercise.
As others have correctly stated, we're unique individuals and there really is no template for 'returning to normal activities'. The 6-to-8 week time-frame is reasonable assuming you're in good health and don't experience any post-op complications that might hinder you undertaking strenuous physical activity. Many of our post-op members (
'posties') have participated in marathons, half-marathons and other competitive sports, including baseball and tennis. Although they might not have played particularly well, initially, they
did play and most enjoyed the effort. The reliable old cliché
'your body will tell you' remains the best advice I could offer, having had a good (rapid) recovery from AN surgery but little experience in vigorous physical exertion, post-op. I do walk quite a bit and I'm in good physical condition (21.6 BMI). In the weeks following my surgery I made an effort to get out and about with frequent 2 mile walks at a local park. It took a bit of effort some days but I'm sure it did me a lot of good. I trust you'll be able to return to your normal active life and those physical activities you enjoy within the aforementioned 6-to-8 week time-frame. I'm also pretty sure your doctor will urge you to do whatever you want, but to avoid anything that could be deleterious to your healing process, such as weight-lifting. In short; you'll be fine.
Jim