Test your general knowledge about sleep
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. Not only is it required to stay healthy, it also allows a space for our brains to think out problems whilst we doze.