Instead, people tell you to sleep on a problem. And we now have good evidence that it's dream sleep that gifts you that type of informational wisdom rather than simply knowledge.

How to Sleep: Ability to Dream May Be in the Genes Published Aug 31, 2018 at 6:59 AM EDT Updated Sep 05, 2018 at 7:58 AM EDT By Aristos Georgiou ...

Most REM sleep comes in the last four hours of sleep, says cognitive neuroscientist Jessica Payne of Notre Dame University. “Dreams in the early, NREM phase can be kind of literal.