It gets frustrating when your work and sleep blend into a huge tangle.
INCOMING NERD TALK COVER YOUR EYES

Actually that's how the brain works...goin a little offtopic but I saw a special on the human body on Discovery a sunday or two ago and it explained how the Brain works during sleep; summarized, REM sleep = Brain is recounting the day's information(and working twice as hard, taking twice the bloodflow of normal) and basically "sorting" it all from Temporary Memory into Permanent Memory, if it's memory worth keeping. They also mentioned something about the above, this sorting combined with the fact that your brain only shuts down 1 part during REM sleep: Reason. Aka you can dream of anything without regard to laws of physics or other rules you'd simply accept while awake; and it's that particular lack of Reason that's led to some things such as Einstein's Theory of Relativity and basically said "...and is why some people wake up in the middle of the night with an "AH HAH!" moment...". Interesting stuff, really, and not only makes alot of sense but explains alot too.

END NERD POST.