I was about 180lbs by the end of highschool, and I was one of the fattest kids in my class. Not to the point that I was given fat kid nicknames or openly mocked, but I was almost always the fattest kid in any given group. Picked last for teams in gym class, chuckled-at when trying to do pullups for the Presidential Physical Fitness Test.
Now I'm 260lbs and fat by any standard. What I wouldn't give to be 180lbs again.