"For all levels" - HAH!! If you can finish this 80-minute workathon the first time, I am not worthy. Karen works every single muscle except maybe the ones that wiggle your ears, first with lower-body toning, then building into a killer of a step workout that combines fast and slow intervals (or "sprints"), then a weight-lifting and crunch session for the Ben-Gay icing on the cake. Warning: you may have to call in sick the next day!
Grade: A+

Sue B