You spend so much time (and, LBH, money) making sure you have the right sneakers for your stride and the best sports bra to keep everything strapped in. But what about putting on the best underwear for your workout? According to the experts, the best options for any workout routine will be made of either cotton or a moisture-wicking synthetic, to keep yeast and bacteria at bay. And, of course, stay away from anything too tight that could cause chafing or just be downright uncomfortable. These eight pairs of workout underwear are worth the buy: