The single least effective workout video I have ever tried. I wore a heart rate monitor during the "cardio burn and sculpt" and the highest my heart rate got was 60% of max. The "high calorie melt" does actually get it up thanks to intermittent high tempo moves. Will your muscles get a workout? Yeah, but despite all the claims of breakthrough exclusive amazing workout technique, i can walk you through the entire DVD right now. Lunge forward 20 times. lunge backward 20 times. lunge to the side 10 times. squat 20 times. repeat... read full review »