I got thinner when i left the fire department. Didn't know what to do with mine spare time and went sporting... a lot. It went up to 9 - 10 times a week, after a year it went down to 'only'
5 - 6 times a week. Lost about 8kg (20 lbs?) in the first half year without even trying to loose weight. Not sure how much i weight now, i need to buy a scale someday.

What i did sportswise, was training for a triathlon and climbing. The weight just started to fly off.