It's great for stretching. I have two questions that I taught my class today but not quite sure the position are correct.  Firstly, figure 4 to stretch glute, I think I set the position correct high bar and slide carriage in.  Secondly, Bookends to stretch adductor that you told press heel to bar such a bit, right? To feel muscle contraction, correct?  Thirdly, resistant of spring should be medium heavy to heavy but it depends on each person, correct? I'm new for reformer, Just practice few times.  Thank you very much.  It's really great stretch.