You won't find any treadmills, stationary bikes, or dumbbells at Zumba Dance Toronto. That's because guests rely on their own bodies to burn calories during dance-inspired classes run by certified Zumba instructors. High-energy tunes pulse through the air as participants step and twist their way through easy-to-follow Latin dance moves designed to strengthen the core, improve flexibility, and slim waistlines. And every Saturday, the studio turns into a makeshift dance club as students perform Zumba under the glow of black lights.