This Stephanie Huckabee "Powerfit Harmony" Cardio Speed Burn is a pleasant twenty minute low-impact cardio workout. I have this workout as part of a set of 10 twenty minute beginner workouts. Stephanie is also an instuctor from The Firm. These Powerfit workouts are much less intense and easier on the body. This particular Cardio Speed Burn is full of low impact cardio moves. I use this for lazy days. I don't even wear shoes when I work out to this one. The set is pleasant, and production quality is high. Stephanie works out with "Cat" and "Holly" as her background workout friends. I recognize them both from 10 Minute Solution and Exercise TV, respectively. Stephanie is upbeat, sweet, and encouraging. Her cuing is perfect. I remember she is one of the most popular and well-liked instructors from The Firm as well. The moves are basic: step touch, V-steps, grapevines, double steps, ham curls, and etc. She adds a few squats, but no lunges. So this is good for someone with bad knees. In the last part of the workout, she uses the workout band, and does some arms moves while doing low-impact cardio. This increases the intensity, and I could feel my shoulders getting a little workout. In summary, this is a good beginner workout. It won't challenge intermediate or advanced exercisers. I like it for my lazy days.