Sometimes I am woken up from deepest sleep by this almost unbearable urge to roll over onto my stomach. It makes no sense to me at first but then I end up doing so, still asleep and as soon as I do that my body is somehow thrown into an orgasm that makes me obviously wide awake, face down in my pillow as my body reacts in its own way and I have never ever quite understood why or what exactly causes this. I can never sleep after this and always end up totally dazed. I decided to experiment with this over the summer as I don't masturbate..for whatever reason but I just stripped down to some pants and before I went to shower I locked the door and rolled onto my stomach a few times and each time I was drawn into an earth shattering orgasm that made very little sense. However I realised that I'm anorexic lol...so I don't exactly do a lot of eating and this seems to work best when I am too hungry to think straight; the hungrier I am the crazier the orgasm. I also get a very subdued and pulsating orgasm say sometimes for days before my period starts, always in the morning and sometimes know I have started when I feel a throbbing andpulsuating sensation down there.