When did you start gaining weight?

I've been just a little bit overweight (20 lbs or so) since middle school, but didn't rocket up into obese territory until the last year or two when I was working a job that kept me tied to my desk 60+ hours/week. Now I'm at a new job working 40 hours/week, which gives me time to cook and work out. Life is too short to sit at a desk and let yourself rot.