Thomas Edison declared that genius is 1% inspiration and 99% perspiration, a fact he discovered while inventing the volcano. Work up a healthy sweat with today's Groupon: for $20, you get one personal training session (a $30 value), four group kickboxing classes (a $49.50 value), and one pair of hand wraps (a $7 value) at Absolute Martial Arts (an $86.50 total value).

The staff at Absolute Martial Arts, who's certified by world champion trainer Grand Master Toddy, outfits students in knuckle-swaddling hand wraps before imparting the self-defense and calorie-burning techniques of authentic Muay Thai kickboxing. To achieve the powerful strikes of Thai boxing, journeys toward martial arts mastery begin with a 40-minute personal training class designed to assess student goals and establish basic skills. Classes incorporate challenging workouts with precise coordination so pupils can learn how to effectively dodge, punch, and kick their way out of paper bags. The intense training involved in Muay Thai instruction also has the potential to burn up to 800 calories per session. Group classes focus primarily on flexibility and power, leading each individual to craft a personal combat system that’s more effective than storing extra fists in their backpack.