At least she didn't start to strip

So we went to our first prepared childbirth class this past Sunday.  Overall, just fine.  We reviewed the stages of birth, did some relaxation technique, and then the instructor showed us how to move to position the baby during labor so that he comes out easier...So she said that your should lean forward (in any position), then move your hips around (back and forth, in circles, etc.).  Ok, no problem.  So she has all the women get up and do this while leaning slightly forward on the back ok a chair.  Ok, no problem.  But then, she wants to show us this movement, like a slow belly dance, in literally every forward-leaning position that she can think of, she gets down on all fours and circles her hips, then she puts her elbows down on the ground and does it with her butt extra up in the air, then she leans over a chair, then she leans farther over the chair, then stands up and does it, then she presses herself up against the wall and does it some more.  I was watching thinking, hmm, is this really needed this many times, but all the men were really trying not to watch and all looked VERY uncomfortable...