I decided to purchase both Powerfit and Powerfit Harmony systems following a stint of ill health to get me back into the exercise groove! So far I have done "Legs & Shoulders", "Chest, Triceps & Glutes" and the Cardio workout, and I am loving them! I would rate myself as high intermediate/low advanced and wasn't expecting too much from Powerfit as I knew they were aimed more at the beginner/intermediate exerciser, yet I was very pleasantly surprised by the intensity of the workouts. As the other reviewer has mentioned, you can use weights or a heavier band/tubing to bump up the intensity. It would also be easy to add more intensity to the cardio moves by adding more impact, more arm movements etc. Stephanie doesn't waste any time with these workouts and pretty much gets straight to business after a brief warm-up. In the strength workouts, Stephanie typically starts with one exercise, then layers in additional exercises - for eg, in Legs & Shoulders, she starts with plie squats, then you hold the legs still whilst doing upriight rows, then combine the 2 moves. Again, more advanced exercisers can combine these exercises from the get-go to increase intensity. I really like how Stephanie incorporated the band in the cardio, both holding the band for an additional upper body challenge, and using it as a prop to step over or around. The Cardio workout has very little TIFTing, and includes (IIRC) 3 mini-routines - you do one combination of moves, then throw that away and onto the next, etc. I like this as TIFTing too much drives me mad (short attention span!!).
Stephanie has created well-thought-out, effective workouts in Powerfit with great production values. I am so happy with these workouts as I can adapt them to my differing fitness needs and easily increase the intensity if I so wish.

Instructor Comments:
I may be the only one on the planet who didn't care for Stephanie's teaching style in The Firm workout; however, having now done Powerfit, I think my previous opinion was more to do with the "Stepford Wife" syndrome that The Firm was synonymous with, rather than Stephanie herself. Stephanie is encouraging, personable and warm in these workouts, with spot-on cueing.

Kaz Lowe