I had two jobs in a row where I'd crash in my cot. At one, I kept it in the attic, at the next I had an actual office. Last job was WFH, so I crashed in an actual bed after lunch.

A 20-minute nap is energizing! Very nice.

CAVEAT: For most of us, 20-minutes+ might make you more tired. Clock it on at 20, test for yourself.