With today's Groupon, PowerHouse Kickboxing is offering a half-price, one-hour one-on-one kickboxing class, normally $90, for just $45. PowerHouse, at 91 Sidney St. in Cambridge, offers a spicy mix of kickboxing, Muay Thai, and boxing in a fun, easy-going, private environment where you'll feel at ease to learn and exercise. PowerHouse has been featured in GoodMenBook.com, Boston Common magazine, and The Boston Globe, which called it one of Boston’s best new hangouts and hot spots.

PowerHouse welcomes all fitness levels and promises a challenging, fun workout tailored to your needs. Whether you want to burn fat or just lift giant ice blocks with your nipples, you'll learn powerful self-defense tools. If you're a fighter hoping to improve your striking technique, PowerHouse can take you to the next level, enabling you to wail on people even tougher than a certain California governor.

Here's what PowerHouse students said at CityVoter:

• "I started at powerhouse kickboxing in October 2006 with zero experience and it was the best decision I made. I love going to workout there." - Daisy
• "Besides the amazing workout, Konstantin keeps the classes small and intimate so he can give personalized feedback." - Angela Martin
• "Powerhouse Kickboxing provides an excellent workout which prepares you for real street or competition fighting." - Pablo Bigio

PowerHouse is a boutique martial arts studio that teaches a new method of fitness management and body development. Plus they have cute kickboxing Hummel figurines for sale. The teacher to student ratio is outstanding: each class has no more than eight students and no less than 10 spirit warriors to guide you on your path. Classes are nothing like those aerobic-cardio kickboxing classes at the gym; they're more like the classes you see in Karate Kid and Karate Kid III (but not Karate Kid II). Whether you’re getting in shape or avenging your father's death, PowerHouse has a level of instruction that's right for you.

PowerHouse’s flooring is the maximum-performance Tatami, which minimizes fatigue and maximizes your ability to rip out your opponent's eyeballs with a single motion. The instructors always ensure that their students train in a safe and sanitary environment.

Get your Groupon!