An excerpt from an OUPblog article published on 17th March 2017.
'Sleep is defined as “a periodic state of muscular relaxation, reduced metabolic rate, and suspended consciousness in which a person is largely unresponsive to events in the environment”. It comes easily to some, and much harder (sometimes impossible) to others, but we all need it in order to function day-to-day. We’ve created a quiz to test your knowledge on a few different aspects of sleep – how much do you know?'
Discover more: Take the quiz on the OUPblog.