This feels if nothing else quite analogous with default mode network, i.e. brain regions which are task-negative (or task-neutral).

It seems that the literature supports the intuition that to meaningfully relax (i.e. exercise the brain with fewer pressures of time, success or similar, and with a relatively low information bandwidth) is really good for cognitive health. And it's very good to destress, which we can all benefit from!

So even if there are more cars than birds outside my own window... I'll make sure to spend a few more moments each day by it :)