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: Despite its age, the core principles of the program— high-intensity circuit training and periodization —remain scientifically sound for building functional strength . Key Workouts Found in the Archive P9O-X extreme home fitness [videorecording] : the workouts
But here is the rub: The version on the Archive is better.
: Despite its age, the core principles of the program— high-intensity circuit training and periodization —remain scientifically sound for building functional strength . Key Workouts Found in the Archive P9O-X extreme home fitness [videorecording] : the workouts
But here is the rub: The version on the Archive is better.