Merge the best aspects of being a firefighter and circus acrobat with today's Groupon: $20 gets you an introductory pole-dance workout at Sheila Kelley S Factor (a $40 value). Celebrate your assets with the workout routine that celebrity sexpots Teri Hatcher (Desperate Housewives), Allison Janney (The West Wing), and Kate Hudson (Almost Famous) love. Whether you're looking to spicy up your love life or tone up your curves, S Factor will have you arching your back as if you were a sexy long-haired wildcat, not to be confused with the long-eared hedgehog, which is really more cute than sexy.

Harness the power of your curvaceous body to build confidence and muscle tone. Fun and inspirational teachers combine elements of ballet, yoga, and striptease (you won't be shedding clothes at your intro class) to strengthen your core and keep you limber. As the seductress embedded deep within makes her way to the surface, you'll engage rarely used muscles, sometimes resulting in day-after pangs of soreness and a confident saunter.

The warm and cozy S Factor studios in New York City are spacious enough to strut and flaunt with no danger of colliding with a low-hanging stalactite or inconveniently placed fruit cart. S Factor's female-only studios keep the focus on how you take your newly discovered moves back home, to the club, or on a subway platform. It's perfect for a unique girls' day out. Classes are taught seven days a week at a variety of times; check out the class calendar for more info.

Reviews

Watch S Factor on Oprah, and read about the fitness trend in O, The Oprah Magazine, US Weekly, Self, OK! Magazine, Healthy Living NYC, Fit, and Body Beautiful.

Yelpers give the 23rd St. location 3.5, and three Citysearchers rate it four stars:

• The classes combine cardio and core...it's a great workout that feels like fun...Think of it as sex, relaxation, working out, feeling good, and ego-boosting all wrapped up into one stiletto. – Aria v., Yelp
• This place truly is about female empowerment...It's about finding your inner goddess. – Bea M., Yelp
• what a great workout. I left feeling empowered and strong and sexxxy...Really a fun experience, and you will get the body you want working out with these ladies. – Maddiesmom, Citysearch

Clothing Optional

While no removal of garmentry takes place during this introductory class, it will provide you with some of the slinky skills needed to shed your protective layers when and where you see fit. It's not often you can go au naturale in modern society, but we were able to find a few places through slightly embarrassing trial and error:

• Nudity seaboard
• Cloning tank
• Diaper commercial
• Pickle barrel
• Mermaid boxing