There are now napping pods that will allow you to sleep standing up.
A Japanese company has developed these pods, called Giraffenaps, which allow the user to nap upright.
And they say 20 minutes is all you need to be completely refreshed.
“In just 20 minutes, you will be refreshed and help improve your performance, such as recovering from fatigue, reducing stress, restoring memory and concentration, and improving creativity,” the company claims.
Here's their website