The first cardinal rule of improving your work output, regularly advocated by productivity gurus and splashed liberally across the pages of self-help books: have a daily routine. There haven’t been many scientific studies into the strategy, but it’s used by highly successful people, from billionaire business magnate Richard Branson to Harry Potter author J.K. Rowling. The idea is to add structure to your day, by blocking out regular time periods for important activities, such as eating and exercise. It’s thought to help people to get more done, while also reducing stress; implementing a daily routine is often used as a treatment for bipolar disorder. In Norway, people take this sensible advice one step further, but eating the same exact food every single day.
Zaria Gorvett, 'The Norwegian art of the packed lunch', BBC
