What is the P90X workout program?

The P90X workout program, also known as Power 90 Extreme, is a rigorous home exercise regimen designed by Tony Horton and developed by the fitness company Beachbody. It spans over 90 days and combines resistance training with body-weight exercises, cardio, plyometrics, ab work, martial arts, and yoga to provide a comprehensive full-body workout aimed at improving fitness and promoting weight loss. The program demands participants to engage in approximately an hour-long session six days per week and includes a detailed nutrition plan to complement the high-intensity physical routines. P90X is distinguished by its use of the "muscle confusion" principle, which varies the workouts to prevent plateaus and ensure continuous progress.