Judgement Call.

When you see an overweight, if not obese, individual exercising, what's your first impression of that person?

And your first impression of that "vision of physical fitness" across the floor?

Did you ever stop to think that those first impressions could be completely inaccurate?

That person you see working diligently to burn bodyfat may not be as unhealthy/unmotivated/"unathletic" as you think.  Maybe their lack of nutritional discipline is their only (albeit significant) concern.

That Greek God(dess)?  May look great on the surface, yet be the healthy equivalent of a ticking time bomb underneath.

"Never judge a book by it's cover" couldn't ring more true here.  Be careful about under/overestimating your level of fitness and health based on what you see in the mirror.