That being semi-right because normal humans can find some form exercise they generally enjoy and if you're going to spend a decent amount of time doing something you might as well do something you like.  Fats don't like to move at all. So they say they don't enjoy doing anything ipso facto they're not supposed to do it. We need to re-frame this one so when a fat says it doesn't exercise because it should be fun the turn is, "Right, exercise should be be fun. That's the norm. What's wrong with you? You're the abnormality here, not exercise."