if you are concerned about your movements during the night, try placing a video camera in your room one ngiht and film yourself asleep. then the next day, if you wake up and your covers are twisted etc, watch the tape back and see how you behave in the night. i know it sounds freaky but it is a good idea as it allows you to witness exactly HOW you sleep.

give it a try, and i hope you find something useful on that site.

simon