1. 12 per cent of people always dream in black and white. Before colour TV, the figure was 85 per cent.
2. According to the Sleep Council, four out of five people complain of disturbed or inadequate sleep.
3. Sea otters have often been seen holding hands while they sleep. This stops them drifting away from each other.
4. The film How To Sleep, written and narrated by the humorist Robert Benchley, won the Oscar for Best Short Subject (Comedy) in 1936.
5. In 1963, Andy Warhol made the film Sleep of poet/artist John Giorno sleeping for 5hr 20min.
6. Dysania is the technical term for finding it difficult to get out of bed in the morning.
7. “Laugh and the world laughs with you; snore and you sleep alone,” (Anthony Burgess).
8. Although koalas have a reputation of sleeping up to 22 hours a day, research suggests that in the wild they only really sleep for 14 hours, with another five hours or so of deep relaxation.
9. The average person spends about 25 years of their life asleep.
10. “Love not sleep, lest thou come to poverty; open thine eyes, and thou shalt be satisfied with bread.” (Proverbs 20:13).