bruceflash:
I liked the routines, but had difficulty following it as a stand alone program for 90 days. Not enough variety for me. When I do P90x, I'll use the Plus series as the "recovery" week instead of the standard version. My favorite routine of the set was Interval X.
I wasnt gonna use it as a stand alone. I was gonna use it in my normal P90X routine to add a bit more to it.