[root_axis]

This happens to me too for as long as I can remember. It's an endless thought-loop of abstract reasoning with a dream-like quality and coherence, never actually quite focusing in on the problem but disruptive to the goal of restful sleep.

[malingo]

I've had these exact type of dreams 4-5x/year for the past 15 years, since being in grad school. They're an interesting phenomenon. They're also fairly disturbing.