For example, when I still trained BJJ, there was this 280lb cop there, really advanced student. 280lbs, no neck, a layer of fat, and he did better cartwheels than a 7 year old girl. When on the ground with people, he would JUMP over them to get to the other side. Oh, and he trained like a Strong Man, i.e. 800lb tire in his backyard that he would flip. This man was definately in good shape, he just had an extra layer of fat. So just because someone is fat or skinny (up to a point, obviously) doesn't mean they are unhealthy. But it also doesn't mean I have to be attracted to them, either.