Pole-based fitness is more effective than 1920s pole sitting, more energizing than pole vaulting, and more sensual than polenta. Give this inspired routine a spin with today's Groupon: for $39, you get a five-class pass for drop-in classes of your choice at Fitness With a Twist on South 21st Street (up to a $100 value). Students with a valid ID can purchase drop-in classes on Thursdays for $10.

Fitness With a Twist's friendly and certified fitness instructors inspire ladies of all fitness levels to fortify their figures and build self-esteem in a variety of classes, most of which are based around a sturdy pole. As the seductress embedded deep within sashays her way to the surface, students will engage rarely used muscles, sometimes resulting in day-after pangs of soreness and a confident saunter. Dancers can drop in to many types of specialized courses to increase their knowledge of pole-based and sensual movements, such as Pole Tricks & Combinations, Climb and Invert, and a chair-dance class.

Beginners' courses allow prospective pole-istas to earn the trust of skittish poles and learn basic moves before seamlessly melding with the metal in fine Alex Mack fashion. Torso muscles can undulate like windsocks thanks to the belly-dancing classes, and exercisers planning to bare buffed-up beach bods can enlist in the Sexy! Booty Boot Camp sessions. Check out the schedule for upcoming dates, times, and the specifics of each class.