BBC: Sleep position gives personality clue
Scientists believe the position in which a person goes to sleep provides an important clue about the kind of person they are.
Personally, I tend to go to sleep in bed. Apparently, this means I'm a natural sceptic, who doesn't believe in bullshit theories.
Professor Idzikowski also found that one arm or leg sticking out of the duvet is Britain's most common position, followed by both feet poking out the end.
If you sleep in the former position, you have the sort of personality that makes you buy duvets that are too hot; if you sleep in the latter position, you have the sort of personality that makes you buy duvets that are too short.