I used to mountain bike. A lot. For some inexplicable reason I stopped a few years ago when other priorities manifested themselves, but recently I decided to start up again. While I'm not horribly out of shape, I'm definitely not the rider I used to be...but I aim to change this soon as the legs start getting used to pedaling again. I never have been much of a weight lifting guy, but the muscle group I've gravitated towards working when I do lift has been legs, and that's also apparent...