I would tip on "yes". It's a "no or low stimulus" time for your brain. Personally I had a hard time "doing nothing," and found repeating and focusing on a word

I would tip on "yes". It's a "no or low stimulus" time for your brain. Personally I had a hard time "doing nothing," and found repeating and focusing on a word or sound in my head helpful - which technically transforms the nap into a lite meditation.