Like the PP, I don't mind a sweaty top but I don't like a sweaty crotch. I wear loose fitting polyester running shorts with underwear built in or black capris/tights when it's cold. No matter what, don't wear cotton underwear, get the breathable ones for working out. I like the ones at Target. To hide sweat up top, you can opt for the all-poly tops over the tech-cotton blend ones. All that said, I say to just own it- show people you are there to workout, not read a magazine on the elliptical!