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P90X, or Power 90 Extreme, is a commercial home exercise regimen created by Tony Horton. Developed as a successor to the program called "Power 90", it is designed to take 90 days, and consists of a training program that uses cross-training and periodization, combined with a nutrition and dietary supplement plan.
== History ==
The system was developed by Tony Horton, Beachbody CEO Carl Daikeler, Beachbody Fitness Advisor Steve Edwards, nutritionist Carrie Wyatt, Creative Director Ned Farr, and workout video director Mason Bendewald.
In 2002, Daikeler requested that Horton create a fitness program...