It has been recently reported that This video can not be played
Light affects all of our most important body functions - from sleep, to our mental wellbeing, even our immune system.
Find out more about BBC Wellbeing Week
It has been recently reported that This video can not be played
Light affects all of our most important body functions - from sleep, to our mental wellbeing, even our immune system.
Find out more about BBC Wellbeing Week