Most Helpful Guy
I like seeing girls in active wear, mostly because I'm an active guy and like an active girl. Sneakers (and not skater-type sneakers, but the kind you would wear for playing sports or working out in), shorts or jeans, t-shirts or tank tops, and if they have any kind of definition in the abs, something that shows off their midriff. Mix it up with a pony tail and you're good to go.
Basically, NOTHING is hotter to me than a girl who looks like she's either about to hit the gym for some high intensity workout, or just got done with it. That's why I work out at home, so that I can focus on my workout. When I'm at the gym, seeing the girls working out gets me going more than any p*rn ever could.