“Polyphasic sleep” might let you get by on two hours of sleep out of 24

You sleep for precise 20-minute naps every four hours.

People who have tried it say after a short adjustment period, they feel great.

On the other hand, you might get cancer. So there’s that.

I love sleep, but I’d love to be able to get by on about four hours a day. I seem to need 7-8.

Disrupted Slumber: Can We Really Hack Sleep