My gym has neither of these and I'm trying to strengthen my lower back and hamstrings.
Are there any alternatives to using these two machines? I'm not even really sure how to do them.
The reverse hyper in particular looks like a very awkward movement. I tried to do one, kind of, by leaning over a desk and brining my legs up. I'm not sure what muscles are involved...just that my tailbone hurt and my back was sore for a couple days.
I have no muscle whatsover on the back of my upper hip bones/tailbone. Not sure if it's supposed to be that way or if I'm a freak of some kind. I have a freakishly weak back though...