
In 2002 Beachbody CEO Carl Daikeler, noticing a gap in products available for people who already had some level of fitness, tasked Tony Horton to create an extreme fitness program so that users "could take it to the next level." He also hired Ned Farr to film its creation so users could "look behind the curtain" and see the process themselves. For the next two years, Tony consulted various fitness experts and experimented with a wide variety of disciplines to find the most effective moves for what became 12 different workouts based on a training concept called periodization, or "muscle confusion," and several 90-day test groups were also conducted to further refine the fitness system. The video diary documentary Ned Farr put together of this process originally appeared every month on Beachbody's website and can now be found on YouTube.
The completed program was released in 2004 and an infomercial was made using this documentary footage. Ned Farr continues to use a documentary approach to the infomercials, using raw home footage supplied by P90X graduates. "P90X: The Proof" infomercial won a Telly award in 2009 and "P90X: The Answer" infomercial won a Moxie award in 2010.
P90X is Beachbody's best-selling product after years of positive word of mouth and heavy infomercial advertisements.[5] Despite sales growth slowing to approximately 30%, P90X represented half of Beachbody's $430 million revenue in 2010. [6] As of November 2010, 3 million copies of P90X have been sold for an estimated $420 million.[6] P90X was referenced in the lyrics to the Bruno Mars song, "
Source : http://en.wikipedia.org/wiki/P90X