In the Victorian era, people made their cores look tight by wearing corsets, which doubled as bulletproof vests during pistol duels. Strengthen your core until it's naturally impervious to bullets instead with today's Groupon: for $50, you get four Pilates reformer classes (a $140 value) at Healthtrax, located in the Gaylord Wellness Center.

Healthtrax provides its guests with salutary services and frame-forming fitness amenities. Topping out at four people and available Mondays, Tuesdays, Fridays, and Sundays, Pilates reformer classes create a personalized-training experience by providing a high level of attention from fitness experts. Developed by trainer and gymnast Joseph Pilates, the strength-boosting Pilates reformer machine uses springs to provide a variable amount of resistance that reduces stress on tendons, ligaments, and human marionette strings. Adjustable straps help to properly position arms and legs, while the curved head and shoulder support aids in stabilizing the body and refining breathing patterns. The muscle-toning machine also allows users to exercise while standing, sitting, kneeling, lying down, or sleepwalking and can be adjusted for a variety of drills. Like squeezing the body through a noodle maker, the state-of-the-art Pilates equipment makes muscles longer and leaner. Visitors can also refresh after a sweat-inducing session in the facility's renovated locker rooms, pool, and steamy sauna, while women can enjoy a quiet stretch in a private workout area.