Exercise is a pleasurable activity for both would-be athletes and recovering pyromaniacs desperate enough to settle for burning calories. Fuel fitness regimens with today’s Groupon: for $37, you get 30 days of unlimited classes at Instinct Fitness in Bridgeville (a $75 value).

At Instinct Fitness, instructors certified in everything from Russian kettlebell to TRX training thrust students into three tiers of calorie-blazing classes designed to build functional strength. Owners Justin and Jason emphasize safety, proper form, and a healthy distance from lions as students work through functional movements using heavy ropes, kettlebells, and TRX suspension apparatuses. Students can opt for beginner classes or scale up the pace and energy and still improve form during intermediate classes. Only accessible after a fitness assessment, advanced classes push students in a no-holds-barred environment, increasing the complexity of movements and intensity of the heavy-rope double-dutch competitions. Saturdays host a boot camp in which participants can vary their standard workouts and find new challenges.

Classes are located inside the MASC Martial Arts Sports Center, which boasts a secure locker room for storing gym bags full of gold doubloons, and an array of showers affords the sweat-soaked a chance to freshen up. The sports center's fully equipped strength-training facility supplements fat-burning efforts, so students can bulk up between kettlebell-swinging sessions.