Forester and wildland firefighter...probably the best possible job for hunting season prep. I get an hour a day of paid PT to train, run, lift, etc. That alone keeps me in pretty good shape. On top of that, about 1/2 my working hours are spent outside beating brush and hiking around the woods, never on trails, scouting out timber, firelines, GPS tracking streams, wetland boundaries, etc. We find tons of great hunting ground just walking around the woods for work, never mind all the sheds, rub lines, wallows, secret basins, etc.
More than anything though, we get tough. You get used to getting smacked in the face by brush all day, hiking up and down wet slopes in the rain, crawling over blowdown, puting miles and miles on wet, sore feet, etc. No amount of fitness or training can prepare you for how miserable the mountains of NWest Montana can be in November. So it's nice to be fairly numb to the suffering once hunting season roles around : )