Would muscle definition also be an inherited trait? It would stink if the only Sims that could have large definition muscles were those made in CAS, while their kids would look just like any other Sim after aging up. I of course realize that child Sims only have the fatness slider and I think teens don't yet have the muscle definition slider, I just wondered if they inherited it and it just showed up on aging up, just as vampire kids don't need plasma till aging up.