If I counted the risers correctly, Cathe uses a higher mini-step and less weight for leg presses in muscle endurance and a lower step but higher wieghts in PLB. Can I conclude from this that if I want to build muscle (increase the bubble in my butt) that a lower step with greater weight is the way to do this? So what happens then if I do PLB with a higher step and start with a little less weight? Any ideas? -joy