Like a good horror movie, a good exercise regimen shocks the body out of its lethargy, which is why so many personal trainers chase their clients on treadmills while brandishing anacondas. Get in less terrified shape with today's Groupon: for $25, you get a five-class punch card at Elle Fit in Tewksbury (a $50 value).

Elle Fit's cadre of savvy instructors guides students of all fitness levels through classes designed to tone musculatures. Shimmy and shake through Zumba classes, which fuse Latin-inspired tunes with the calorie-incinerating dance moves that made the Peanuts gang famous. Body Sculpt classes keep easily bored muscles engaged with a blend of cardio routines and strength training, employing the aid of resistance bands, light weights, and yoga balls for a total body tone-up. For a more martial experience, boot camp classes whip participants into military-grade shape with a workout routine that encourages group support and gets exercisers ready to fight off armies of rogue sweet teeth. Groupon holders can take classes à la carte, and if you attend two classes in a row any Saturday morning during June, Elle Fit will only count it as one class off your punch card.