Problems are solved by sleeping

[runawaybunny]

Problems are solved by sleeping - BBC

Sleeping on a problem really can help solve it, say scientists who found a dreamy nap boosts creative powers.

They tested whether "incubating" a problem allowed a flash of insight, and found it did, especially when people entered a phase of sleep known as REM.

 

[AnnieO]

I would agree with this! My brain works on things while I'm dreaming, and sometimes I wake up with a better solution than the one I was going to use.