Set to original-form music , Zumba classes combine dancing and aerobics . The class is led by a teacher who leads the group through basic steps in time with the music. Zumba adherents rave about its physical and psychological benefits .
Set to original-form music , Zumba classes combine dancing and aerobics . Since 2003 , more than 20,000 instructors have been trained worldwide . Zumba adherents rave about its physical and psychological benefits .