I've just read in a novel that it's an old wives' tale that whether you're a night owl or morning lark is determined by the time of day you are born.
Obviously it's a load of nonsense.
Or is it?!
I present my utterly compelling evidence:
DS1, born 01.17, stays up for hours each evening and was a pain to get to sleep right from birth.
DS2, born 20.15 also dreadful sleeper as a baby, but doesn't stay up as late as his brother now.
I was born in the morning and I'm definitely a morning person...
..
The plot thickens.