Much like flirting with danger, flirting with fitness can result in a powerful adrenaline rush, wind-blown hair, and doe-eyed interactions with a hunky ambulance driver. Create your own siren song with today's Groupon: for $55, you get three classes (a $25 value each), a signature flirtini cocktail (an $8 value), three valet-parking passes (an $8 value each), and a manicure (a $20 value) at Flirty Girl Fitness in the West Loop (a $127 total value).

Flirty Girl Fitness is a fun, ladies-only workoutorium where women of all shapes, sizes, and fitness levels flock for playful group classes on inventive body-shaking techniques. Opt for the Video Vixen class to learn the choreographed moves from popular music videos or take the pole-dancing class and learn to sensually scamper up a light pole when screeching kittens are closing in. Zumba routines, based on Latin dance, run bodies through a high-energy wringer, and abs and booty classes target specific muscle groups, transforming flesh into firmer flesh.

Before or after any class, step up to the full-service bar for a signature Flirtini cocktail (you may substitute a smoothie) and into the Flirty Girl spa for a 25-minute flirty manicure. Hands loosen up with a relaxing soak before placing cuticles and claws under the gentle care of nail technicians, who finish with a hand massage. Three valet-parking passes, good Monday through Friday from 10 a.m. to 8 p.m., transfer vehicles into the hands of a smooth driver, who give them tips on buttering up city parking garages. Check the packed daily schedule for class times.