Earth, an alluring enigma, is balanced in the void of space upon two poles over which it sensuously spins and ineffably shimmies. Harness the power of your polarity with today's Groupon to Studio Fitness. Choose between the following options:

• For $30, you get nine pole-dancing classes (a $90 value). Though Studio Fitness has a schedule full of classes for continuing students, this Groupon is good only for pole-dancing sessions on Wednesdays and Fridays at 11:30 a.m. and Tuesdays at 5:00 p.m.

• For $25, you get nine Zumba classes (a $63 value), held on Wednesdays and Fridays at 10:00 a.m. and Saturdays at 11:00 a.m.

Amid flashing lights, hardwood flooring, and several floor-to-ceiling poles, the experienced instructors at Studio Fitness lead groups through sensual exercises that build muscle tone, core strength, and self-confidence. Designed to teach women of all sizes and ages to feel sexy and stress-free as they sway their hips and dip their booties, pole-dancing classes include floor routines, stretching, and strength building to give students the self-assurance to finally ask a pole to dance. While a cool beat plays and lighting dims, dancers strive to master basic choreographed routines that fuse dance with pole grips and spins. In Zumba classes, a high-energy Latin beat fuels cardio dance, burning calories in a way that's more fun than running on a treadmill or lighting a doughnut on fire.