6 Dec 2011
Kipping could be in your genes
If you're one of those people who need a lie-in in the mornings, you may now have an excuse. Scientists in Germany and Scotland say that people's need for sleep is linked to their genes.
If you're one of those people who need a lie-in in the mornings, you may now have an excuse. Scientists in Germany and Scotland say that people's need for sleep is linked to their genes.