Guys, Guys behavior question?

Hi Guy's
When I go to the gym and I'm running on the treadmill, I notice that the guys like to watch me sweat. So what I would like to know is why is it that men like to watch women sweat in the gym. Also, I notice that when I run, I get a lot more attention? So why would any guy like to watch me run and sweat? Your help is appreciated guys. I really need to know, thanks.
Guys, Guys behavior question?
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