I'm assuming I fit the description of having a "great body"; nonetheless:
I was a fat kid growing up. My parents encouraged my brothers and I to play sports, something I did not want to, or as I later found out, I didn't want to play the sports my brothers played (football, baseball). I tried out for basketball and loved the running side of it.
I ran cross country and track my last year in high school. In college I did not run cross country until my senior year, battling Freshman, Sophomore and Junior year poundage.
After college when I was on my own, I began running marathons, eating right, and lifting more. After 27 marathons, countless tris and all the training that went into those competitions, I decided a year ago to try and put on muscle and mass; the results are posted in my profile.
I think there's always fear in me of that fat kid showing up again; I'm in a place to kick his ass if he does.