Jamie, I enjoy her wkouts! They're typically about 1 hour and you work up a nice sweat! They ARE described as metabolic circuit workouts. I'm not sure exactly what's in the new Peak 10 but the other ones.......she has you start at "basecamp" which is your recovery, then you move into "ascent" where you begin to up the intensity, "climb" is where you're pushing yourself hard then "peak" which last 15-20 seconds of hard cardio . The moves are add on style and her cueing is great. If your using weights..that's in the ascent segment. All compound moves that really do a nice job working you. She uses FULL range of motion and manages to work the core pretty good. I usually burn over 450 calories and feel pleasantly spent after. Love them! Try it!!