Although feeling the burn during a workout is generally a good sign, feeling the burn while sitting on the sofa means your sofa is in the fireplace. Engage in controlled, constructive body burning with today's Groupon to Eastside Wellness Connections. Choose between the following options:

• For $19, you get one month of unlimited spinning classes (a $40 value).
• For $59, you get one month of unlimited mat Pilates, yoga, and Zumba classes (a $120 value).

Eastside Wellness Connections boosts overall health with dozens of weekly fitness classes that develop strength, flexibility, and body awareness. Quadriceps seekers saddle up to 40-minute spinning classes, where Lycra-clad students charge along on stationary bikes while an instructor creates vivid mental pictures of a challenging outdoor workout, such as cycling the rim of the Grand Canyon, zipping through a lush forest, or delivering packages in New York City by unicycle. Students adjust the intensity of the workout to their own skill levels by modifying the settings on their bike or swapping out rubber footwear for leaden sneakers. Cyclers torch up to 600 calories during this fat-burning session and increase lower-body strength and foot-to-pedal coordination.

For full-body fitness, explore the studio's yoga, mat Pilates, and Zumba classes, which improve core strength and develop long, lean muscles. Yoga instructors shepherd flocks of students through classes including beginner's yoga, hot yoga, and challenging Hatha yoga, ensuring that even wayward sheep reach the right poses. Abdomens and backs tense and crunch their way to muscular definition during mat Pilates, where a combination of resistance-based floor exercises increases endurance, strength, and flexibility. High-energy Zumba classes banish inhibitions and extra pounds with hip-swiveling, Latin–inspired aerobic-dance numbers.