It may be more to do with testosterone. I doubt that the stronger of these men were all working out and the weaker were all sat on couches. It's more...
I have to shave my strip of belly-hair (pubis-to-bellybutton) when I model. But I'm really proud of it, because it shows all the testosterone I have....
I hope the nose-to-tail trend blows over. I used to like getting cheap grass-fed lambs' liver and marrow-bones.
Thankfully most people don't seem to...