Muscles are like stunt doubles—without proper training, they risk becoming nothing more than piles of goo. Cultivate sinewy fibers with today's Groupon: for $49, you get one private Pilates introductory class and four group classes of your choice (a $225 value) from IM=X Pilates in Guilford.

Integrated Movement Xercize Pilates describes a fusion-fitness approach that blends the lengthening and muscle-toning action of Pilates with strength and cardio training for efficient body sculpting. The private introductory class (a $65 value) is designed to give novices familiarity with the Pilates reformer equipment, which pumps up endurance, muscle tone, and limberness, while strengthening the spine and abdominal core for Volkswagen-juggling contests. Under the individualized guidance of a highly certified trainer, Pilates pupils will perform a few baseline tests in the first session, allowing muscle doyens to evaluate body composition, strength, flexibility, and knowledge of sitcom theme songs, before developing a well-rounded fitness routine. Then select four of IM=X Pilate's Xercizer, reformer, hybrids, or TRX classes (a $40/class value, 25 options per week) to continue training and keep tickers pounding hard during demanding training montages. A robust schedule of classes offered throughout the week provides eager physiques with ample opportunity for calorie-blasting.