Be it aliens peering through the open window wanting to stick some wired instrument up your nostrils or arse, or a burgler creeping round the house.
(In one of the flats I used to live in their was a reason for these feelings but nothing like that exists here!)
Anyway, I've now been awake for over 90 minutes and still can't get back to sleep... and this is after I've checked the house, closed the bedroom window and locked the bedroom door!!!
I also had yet another VVD (Very Vivid Dream) this evening. That's my fourth this week!
ARG! Anyway, going to see if I can get some rest (or just read) for the next 90 mins before my alarm let's me know it's time to get up for work..... joy.