well see thats the problem if one of these personlities is awake your brain wont go into REM sleep see you only dreem in REM sleep that why you wouldnt dream your bodies getting rested but not your brain i dont mean your mind i mean teh brain tisue its not going into proper repair mode its like when you update a computer often it cant do it its rebootiong or shuting down REM sleep is like your brain rebooting.<br/><br/>me and my bollocks its amazing where i find this stuff lol