"I almost always wear Under Armour pants on the bottom. The stay up and I never get that loosey-goosey crotch that I can't stand."
Melissa, LOL!
I don't know how anyone does cardio wearing any kind of pants; I'd go up in flames if you dropped a match on me!
I do find I feel better wearing stuff that's a little nicer, if only because you can see the results of your hard work, you know? What I did was limit myself to two pair of really nice Nike drawstring shorts which I rotate, and a sports bra. I start with a t-shirt which is always off by the end of the warm-up.
Oh, and sometimes when my laundry is challenged, I wear funny socks with cats on them and things. My SO always gives me a look of horror, hehe.
Marie