This new one of Sharon's is my favorite of the new CIA's! I could do it everyday - it is definitely a little more than a steady state step workout.
Sharon does three combos, then she splices them together at the end to make up the fourth combo. She has so much new innovative moves that just make me smile, just like in her other workouts. With each combo, she starts by doing the basic steady state step, then she adds on an athletic twist to the combo, then she puts them together. I don't think I will ever get sick of this one.
The ball section which is 22 minutes is also a blast. She always has a great ab section.
Being that you are 28 weeks pregnant, I think if you buy it, you should stick with a 6" step height. There is a modifier with her.
Cheryl