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: for $40, you get a four-class package at Sumara Pole Fitness and Dance Center (a $100 value). The package includes:

• Orientation: One Intro to Pole Fitness class (a $20 value)
• Pole Fitness: One Level 1 class (a $35 value)
• Pole Dance: A choice of either Pole Choreography or Discover Your Sexy Silhouette classes (a $35 value)
Conditioning: One Open Pole Jam class (a $10 value)

Certified instructors at Sumara Pole Fitness and Dance Center, formerly known as Sexy Silhouettes by Sara, instill students of any shape and experience level with alluring moves and sensual self-confidence via pole-dancing classes. Pupils cast off inhibitions and glean dance basics in the Intro to Pole Fitness class, in which an experienced undulator teaches the basic walk, fireman spin, and classic poses to kindle self-confidence and ensure a racier experience at future capture-the-flag tournaments. The level 1 course steps up the seduction as students cultivate upper-body strength and powerful core muscles by gripping the pole with their inner thighs, knees, arms, and prehensile tails while honing spinning and climbing skills. Open pole jams encourage recently trained students to show off their skills and make new friends in a social hour full of dance demonstrations, instructional videos, and invigorating tunes. For every class, students should be sure to wear comfortable clothing and rubber-soled shoes and avoid oils, lotion, and jewelry.