Roxy often sleeps on top of me at some point during the night -  for
example, on one of my shoulder blades, facing toward my head, with her
chin hooked over that shoulder (very cute), or meatloafing on my butt,
facing footward, among other locations/positions.

For some reason, last night she got on me and into a position that
she has never done before: she was on my upper back, lying right along
my spine, facing toward my butt. But her back feet were on my neck,
and her butt was right on the base of my head, allowing her weight to
gently push my head upward and very slightly "lengthen" my neck. In
other words, she was providing traction for my highest vertebrae. I
wonder if it was therapeutic for me? :)

Joyce