Oh god... I have no idea WHY it's sexy... it just is.

I think part of it might be because so often it's Not Done for a Lady to sweat, and so when I see a chick all sweaty and messed up, it's a turn on because you're seeing a rare or unconventional portrayal. And, as was said earlier - you're seeing them more down-to-earth, without pretense.

There's probably some flick back to Prehistoric times, too - "Woman Sweat Lots, Woman Tired. Woman Vulnerable! Me Go, Fuck Woman Good!"
It's our masculine instinct to reproduce again.

Just my convoluted thoughts!
CasperTG

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You know, Blackadder, for me socks are like sex. Tons of it about and I never seem to get any.

My Photos:
https://imgur.com/a/80hiRdm