When to exercise again after surgery?

[Guest guest]

I'm almost 4 weeks post-op (this coming Tuesday afternoon to be

exact). I only had upper surgery and feel pretty good. I've also

started walking again as my exercise regimen for the time being. Do

you think it'll be safe for me to start weight-lifting again and

doing crunches, lunges, and squats? My OS told me to take it easy

and gave me the go-ahead to exercise " whenever you feel like you

can. " Well, that doesn't really help me! He warned me again high-

impact exercises, though. So, when did you guys start going back to

your normal exercise routines?