Bench-pressing soup cans is not exercise, unlike bench-pressing the inventor of the soup can, a Frenchman named Nicolas Appert. Innovate your muscles with this Groupon. Choose Between Two Options $29 for 10 drop-in classes or visits (a $100 value) $19 for 5 drop-in classes or visits (a $50 value) Ultra Fitness Centerâ€™s two floors are open seven days a week and host 34 classes. The Latin rhythms of Zumba inspire attendees to dance off calories, and spin classes elevate heartbeats. Boxing-class students pound heavy bags every Friday at 6 p.m., allowing neighboring sewing businesses to hold How to Fix a Punching Bag classes.