Are you a night owl or an early bird?
Bedtimes are a battleground - and not just for children. The news that George Bush goes to bed at 7.45pm got Tim Dowling thinking - when is an acceptable time to hit the pillow? Does it matter if you retire at a different time from your bedmate? And what do our sleeping habits say about us?
http://www.guardian.co.uk/g2/story/0,,1797903,00.html