Working out in a group is often more effective than exercising alone, as the group helps foster a supportive community to share tips for maintaining motivation and outsmarting cheeseburgers. Work out in the protection of a pack with today's Groupon: for $40, you get a 10-class punch card, a metabolic-rate test, and a program-mapping guide at Weston Fitness (a $280 total value).

Weston Fitness helps gym-goers form and achieve health goals, bolstering the process with expert advice and an array of classes spanning yoga to boxing. Guests initially meet with Weston's fitness professionals to create program-mapping guides that lay out the paths and secret corridors that lead to successful fulfillment of fitness objectives. A 10-minute metabolic testing uses breathing exercises to determine the appropriate number of calories to eat in order to lose weight or clingy prosthetic wings. Guests sign up for group fitness classes listed on the gym's schedule. Held all day during the week, the classes run up to 60 minutes in length with options such as Zumba, Vinyasa yoga, and Pilates. Sate pedal-hungry paws with a Power Cycling class, or tone from toe to top hat with Cross Training sessions that combine jump ropes, light weights, and body bands.