I had a child years ago and was never really "out" of shape. I decided I wanted to get more fit and put on muscle to be a good example/role model for him. I'm also working on those last 8-10 "vanity" pounds that cover my hips & abs.

It keeps me going, gives me that much more motivation to wake up at 5 AM :). Plus working out keeps me in top shape to keep up with my kid. No better feeling than working out and having your son ask if he can workout with you!