I agree on both parts Silent&Tex.It is not a prerequisite for harvesting game,Yet if you do hunt mountain terrain or want to have the staying power or endure extreems like tempeture,long stalks,staying on stand all day because youre back doesn't hurt from having a pot belly or beerbelly in my case
holding steady and possibly patiens I believe being in decent shape is a big help and does not hurt at all.It also can be a big help even if you hunt some of this flat lpublic land in Illinois where you have to walk in for ever, and drag a critter out cause they don't allow you to bring in any wheeled carts or anything like that.Bill D>