For $25, today's side deal gets you two 90-minute break dancing or parkour classes (a $52 value) from AcroSports, a nonprofit organization dedicated to educating the public on the benefits of alternative exercise and artistic expression. Feel free to split your two-part Groupon with an acrobatic friend to add a friendly face to the sea of friendly faces in each class.

For the uninitiated, parkour involves the fluid and efficient conquering of any environment, man-made or naturally occurring, using nothing more than the present obstacles, your body, and your imagination. Originally ignited in France, the discipline continues to grow and has even nabbed further exposure with MTV's Ultimate Parkour Challenge. During your parkour class, you'll develop safe techniques for landing, jumping, spotting, and more in the face of diverse, unpredictable obstacles. In line with the take-it-with-you mentality of parkour, AcroSports' break dancing classes will provide participants with a fundamental introduction to the power moves and freezes you may or may not need to save the life of an upcoming party.

Both classes are scheduled during work-friendly hours, and require no previous experience. Parkour class begins promptly at 7 p.m. on Wednesdays and break dancing class starts on Mondays at 7 p.m. Both classes are on a first-come, first-serve basis, so show up early and, out of respect for the art, leave your webbing cartridges at home.

Reviews

Yelpers give AcroSports an average of four stars, and lilaguide reviewers give it a 3.5-star average:

• AcroSports has tons and tons and tons of programs, for anyone and everyone... – Rachel R., Yelp
• Nonprofit circus and performance center that teaches adults and children alike how to soar through the air, scale buildings and more. What else could you want out of your Wednesday night. – Jessica M., Yelp
• The coaches are fabulous -- so energetic and caring. – One mom, lilaguide