Elon Musk claims he sleeps with a pile of BOOKS under his head to 'help with digestion' - but does it really work?

Elon Musk claims he sleeps with a pile of BOOKS under his head to 'help with digestion' - but does it really work?

Although he's best known for his rockets and electric cars, Elon Musk has taken to social media to hand out some highly unusual medical advice.