The most secretive body parts are muscles, which hide behind layers of skin and appear only occasionally to help lift cars off trapped kittens. Flex your biceps in the absence of a cat emergency with today's Groupon: for $30, you get eight classes in the On-Ramp fitness program at CrossFit Initiative on Prototype Drive (a $133 value).

CrossFit is a general strength and conditioning program that is based on an inclusive set of movements and exercises with the level of difficulty determined by the participant's fitness level. This impartial program is used by military units, elite athletes, fitness enthusiasts, and first-time muscle molders alike. Set in an inviting atmosphere, the eight-class introductory boot camp to CrossFit, called the On-Ramp program, focuses on introducing foundational movements of CrossFit, developing training consistency, and preparing the body for the constant variation of high-intensity workouts. Before starting On-Ramp, a certified CrossFit instructor works with students individually to find the proper level of intensity and jazz hands as they are eased into the program comfortably and safely over a two-week period. Like each enlightening visit to Mother Schwarzenegger's house, CrossFit also offers guests nutritional consultation and personal-training options.

Reviews

While there are few online user reviews, CrossFit Initiative has several customer testimonials available on its website.