Is overwork a vice? Many people spend huge amounts of time at the office and then have to deal with work emails at home. Some experts see the obsession as a demon we must fight.
We must re-learn how to rest, author claims
Blue snoozers: Van Gogh's The Siesta shows workers taking their regular afternoon rest. Glossary
Protestant - A Christian religious movement that began in Europe in the early 16th Century.
Industrial Revolution - A period of sudden, rapid industrialisation that transforms a country from an agricultural to an industrial economy.
Warped - Twisted out of a natural or normal shape.