I am a full time personal trainer. I am always looking for new ways to train myself and my cients. I like to keep it fun, energetic, challenging and motivating. One day I found myself glued to the TV watching this crazy guy talk about the P90x system. I loved what he sayed and what he did...he was teaching everything I already believed in and already used with new and differnet exciting moves and concepts. I loved the system because it was challenging, but could still work for the less conditioned individual. For myself, I am always looking for ways to keep my workouts fresh and fun...the DVDS were a great learning tool. Thus, I soon found myself buying the product. My testimony is easy I use the program for myself and my clients..they have never worked so hard! The system works and currently I am challenging myself to go farther and be fitter than ever before. Just wait to the new year and see how well it works!