At the eba Center for Dance and Fitness, the world of West Side Story coexists with the folklore of Tahiti and the fluid performance art of Isadora Duncan. That's because the class catalogue is both sprawling and diverse, accommodating guests of all ages and abilities. Move Your Body classes, for example, cater to students 50 and older with a restorative and rhythmic workout, while ballet and modern hip-hop fusion courses hone in on specific styles. Some classes, like Pilates and yoga, focus on developing muscle and flexibility. Others, like Ballet Workout, gracefully combine dance and fitness aspects without having students do the Macarena on a treadmill.