I definitely think so. I swam competitively until I got to college, in addition to mountain biking, waterskiing, rock climbing, and backpacking about 300 miles a year. I was *definitely* in shape.
College changed some of that - freshmen semester, I put on 20 #, and lost all of it during my second semester. I was about 155# naturally for the better part of six years. I've only now begun to put on weight - but it's intentional, and muscle mass.
I"m not quite as lean as I would like to be, but that will change soon. I honestly think that being in great shape made me body-conscious aware, and I know that I'll never be fat, short of some sort of catastrophe. I simply do not like guys with extra pounds - or women...
I also like the way I feel when I"m in shape, as well as the way I look, and now that I"m getting older, I recognize the long term benefits - from the diet - to the exercise, to being able to ward off what is probably the worst genetic family history in the world. ;-)