RE: Conditioning for hunting season.
Prior service Marine here now works as a personal trainer at a gym. I get paid to put others through he11 and get a workout at the same time. As far as what will benefit you.... I use a step mill (like walking up an escalator going down). Any bicep and back exercises would be beneficial for pulling and lifting that buck out of the woods and into your truck bed. Legs and Back are what wears out or gets injured first while dragging out a large animal.