Growing up, I spent a lot of time at my best friend's house. We would spend our days playing video games in his room in the basement until all hours of the day and night. His mom didn't mind as long as we were staying out of trouble. The lack of activity, playing video games, and eating junk food was a recipe for disaster. Brian's family was all heavy-set, but by the time we reached our senior year of high school, he was...