It might also help you to know, then, that I never was someone who loved gym class, and I still don't look like one, perhaps even when I am in the middle of enjoying some physical activity.
I look like a pudgy, clumsy intellectual, and I am... I'm just also one who runs, bikes, practices (and teaches) yoga, occasionally swims, dances, rides horses, hikes, and moves heavy things around without waiting for someone who looks more appropriate to do it.
I'm pretty sure a lot of people judge on appearances, and come to the conclusion that they're not already good at and enjoying a physical activity because People Like Them Just Don't Do Things Like that, and then give up before they find the sweet spot.