Professional role model Heidi Montag has invented a cutting edge new weight loss routine that's sure to slim your figure that is called pitch P90X. P90X, or Power 90 Extreme, is a home exercise system developed by Tony Horton in conjunction with Beachbody, which aims for an improved physique in 90 days through rigorous interval training. The program emphasizes full-body fitness, and consists of cardiovascular, strength training, and stretching exercises divided into three 30-day phases, combined with a nutrition and optional supplementation plan.

P90X stresses the importance of "muscle confusion" (a term for adding variety through cross-training and periodization), so it switches the order of exercises and incorporates new movements during each phase. According to Horton, muscle confusion prevents the body from adapting to exercises over time, resulting in continual improvement without plateaus.

P90X is the current incarnation of several generations of interval training programs developed by Tony Horton with the Beachbody home fitness company. In 1998, Horton helped create his first home exercise product, called Great Body Guaranteed, as well as the original Power 90 interval and circuit-training home workout videos. The formula, marketed via infomercials and other broadcast media, began selling well, and in 2004 Horton debuted his "extreme" version.

P90X was created to build on the ideas started in the original Power 90, with new and more intense exercise routines. Horton honed the program in his Santa Monica, California workout studio, eventually using successful graduates from his classes when shooting the final workout videos. In total, Horton has created five different 90-day programs associated with the Power 90 name: Power 90, Power 90 Master Series, P90X, P90X Plus and most recently P90X MC2, which is intended for P90X graduates. P90X continues to be Beachbody's best-selling product after years of positive word of mouth and heavy infomercial advertisements. In April 2008, P90X became the best-selling infomercial of any type in the United States.
Since its introduction, P90X has been used by a reported 2 million people.




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