Thomas Edison declared that genius is 1 per cent inspiration and 99 per cent perspiration, a fact he discovered while inventing the volcano. Work up a healthy sweat with today's Groupon: for $20, you get four Zumba classes at Zumba with Joel (a $60 value). The one-hour classes are valid at Studio Fitness Windsor on Rhodes Drive.

Zumba, a lively Latin-dance fitness program, uses a combination of dance moves, cardio-interval, and resistance routines to sculpt muscles and burn up to 800 calories per hour. Encouraged to teach the rollicking classes by Zumba founder Beto Perez, instructor Joel makes fitness achievement a more musical and entertaining process than going toe-to-toe with a steam-powered hammer. Neither a partner nor any previous dance ability is required for Zumba’s basic salsa, merengue, cumbia, samba, and hip-hop moves, galvanized by the classes’ upbeat music tracks. Hip swayers of all ages and abilities can take the alternating slow and fast beats integral to the program at their own pace, gradually building up strength, endurance, and the solution to Fermat’s Last Theorem.