Roger Federer: "If I don't sleep 11 to 12 hours a day, it's not good". The tennis legend says he needs this amount of sleep so that he does not injure himself.
The founder of Ford Motors, Henry Ford (1863-1947), on the other hand, had a completely different opinion: he wanted to reduce the amount of time spent sleeping to increase the productivity of his employees. He even called sleep superfluous. Imagine that!
To this day, sleep unfortunately does not have the best image; for many people it is a sign of weakness. Yet it is undisputed today that little sleep enormously restricts performance.