I have to say while most people say "oh we ALWAYS played outside" I seem to recall it was because we were forced to. By the time I was teen I would sit myself now in front of the TV for hours and be a couch potato. But I never gained any weight, I suspect it's because I took up chain smoking at age twelve, something most kids don't do today because not only is it unhealthy but now when they are stressed they EAT.