Yeah, I get the same thing. It happens when I sleep on my stomach. Sometimes I wake up with a totally numb arm that I can't move at all until it wakes up a little bit. I looked in to it briefly once, but couldn't really find any information. As soon as the feeling comes back it is 100% normal again, so I haven't worried too much about it but I'm curious if anyone else gets this too.
3/11/14 at 11:17am