Dance cardio is a fun and easy way to get moving while listening to your favorite music. Stephanie Mansour, PBS host of “Step It Up With Steph,” shares an aerobic dance workout that help improve flexibility, balance and strength endurance.Dance cardio is a fun and easy way to get moving while listening to your favorite music. Stephanie Mansour, PBS host of “Step It Up With Steph,” shares an aerobic dance workout that help improve flexibility, balance and strength endurance.