I've had this video for years. I recently came back to it to do more "cardio". One of the great things about this workout is that everyone of the three workouts is LOW impact. The first one is probably way too easy for all but beginners. I like to combine the cardio walk with the power walk (which uses weights) and it does make me sweat. I am a 42 year-old, intermediate exerciser and this workout offers a challenge if you do at least two segments in a row. Definitely worth the investment!