I just finished IMAX 4, I put the platform, but in many parts I didn't use a Step at all.
And aghast: I replaced some parts with my Treadmill. As I do with many Step workouts.
When I finished I was hot & sweaty! Yeah!
Buns of Steel 10 Circuit Leisa Hart. I actually did some of the band-work & added dumbells for the extra sets.(whether they do 1 set or 2, I always add to make 3)+TM