Perhaps the motor function of writing is part of this. I notice similar effects while walking and thinking too, though not always in the same way. It seems like the mind needs to be given a chance to meander, almost as if when the body is busy doing something else (writing, walking) it has a chance to actually not worry about what to do next and instead just relax on a thought and potentially discover something new about it. This feels in some way similar to diffuse thinking or benefits of walking.

Perhaps the motor function of writing is part of this. I notice similar effects while walking and thinking too, though not always in the same way. It seems like the mind needs to be given a chance to meander, almost as if when the body is busy doing something else (writing, walking) it has a chance to actually not worry about what to do next and instead just relax on a thought and potentially discover something new about it. This feels in some way similar to diffuse thinking or benefits of walking