The gym is still dominated by pink tights and heart-stopping feminine butts, but men are catching up and joining the gym population. More of the male species are attaining their fitness goals in gym classes with Katy Perry remixes charging the air. There are guys designed to score high in CrossFit boxes, but there will always be an equal number, maybe more, of those doing resistance training in a gym class of 30 people, pumping weights to the tune of pop remixes.