Cathe Friedrich's Hardcore Extreme(2005)

Hardcore Extreme consists of three intense workouts each averaging approximately 70 minutes in length. These workouts are a compilation of the following four DVD workouts from the Hard Core Series: Imax 3, Low Max, Kick Max, and High Step Challenge. WORKOUT #1 combines interval training with circuit training. WORKOUT #2 combines high impact and low-impact intervals. WORKOUT #3 combines interval training with high-impact conditioning drills as well as leg conditioning drills.