An apple a day keeps the doctor away, just as a double-cheeseburger a day keeps the leather pants locked securely in the safe-deposit box. Liberate lonely leggings with today's Groupon: for $15, you get a 30-day guest pass to Bally Total Fitness, valid at 10 Portland-area locations (a $48.98 value). This Groupon must be activated within 60 days and is good for up to 30 days of consecutive visits. Additionally, this Groupon is valid only at the location where it is activated.

Bally Total Fitness enshrines exercise classes, calorie-burning equipment, and a fitness-focused staff within its sanctuaries of health. A 30-day guest pass includes access to a spread of group exercise classes, including Pilates, Reaction Cycling, Step Fitness, and High-Impact Hopscotch (class offerings vary by location). For self-guided worker-outers, cardio equipment such as treadmills, elliptical machines, cross-trainers, and stair climbers work to torch calories while entertaining the brain with video entertainment and integrated music systems that occasionally whisper quotes from Charles Atlas. Bally also boasts a bulk-building army of strength machines, free weights, and small-apparatus equipment, and grants gym-goers access to on-site locker rooms, showers, and, at some locations, a pool and steam room, ideal for drenching annoyingly dry towels. Visit each location's webpage for a list of specific amenities and the lineup of classes.