[supernikio2]

It would be interesting to know how much quiet time the brain needs to properly rest throughout the day.

However I feel like this question falls into the "optimise every second of the day" thought pattern which kinda goes against the point.

[andyferris]

That’s funny. Still, I think it’s more that the “obvious” optimal (fill up your day with productive tasks) is actually non-optimal, which is an important and useful fact to consider and share.

[ericjmorey]

It likely depends on things that are difficult or impossible to measure like the amount of stress experienced in the past.