Jenn Rupp, 34, co-owner and instructor for NOLA Danze Fuzion (zumbanola.com), demonstrates the merengue, one of the many dance fitness steps in the wildly popular Zumba repertoire. “Zumba has been ...

CORAL GABLES, Fla. — On a rooftop parking lot, with temperatures in the chilly low 50s, a crowd of all ages shimmied and shook, sweated and smiled as DJ Francis played an eclectic mix of dance music.

Mary Rose Field has something she'd like to tell you: working out does not have to be a drag. We know, we know. We've heard it all before. If we'd just try to overcome our laziness, all those crunches ...