Zumba is a fitness program that combines Latin music and easy-to-follow dance moves. It is based on the principle that a workout should be FUN AND EASY TO DO. Zumba is not only great for the body, but it is also great for the mind. Zumba routines incorporate interval training, alternating fast and slow rhythms and resistance training. Fans say it’s so popular because it’s a fun way to work out.