The Latin-inspired dance workout is one of the most popular group exercise classes in the world. The high-energy classes are set to upbeat music and feature choreographed dance numbers. You don’t need to be a great dancer to feel welcome in a Zumba class. Zumba is an interval workout. The classes move between high- and low-intensity dance moves designed to get the heart rate up and boost cardio endurance. It is a great cardio workout that melts fat, strengthens the core, and improves flexibility.