Cathe Friedrich's Ripped with HiiT Discount Bundle: 9 workouts on 7 DVDs Released December 2014, this incredible set includes NINE workouts on SEVEN DVDs! Intense, highly-effective advanced-level HiiT training designed and led by Cathe Friedrich Ripped with HiiT combines three solid heavy weight workouts (on three separate DVDs), four solid cardio based HiiT workouts (on two DVDs), and two circuit Hiit workouts (on two DVDs) Studies have shown that HiiT training is better at burning fat than other forms of cardiovascular training