After a semi wake-up earlier this morning I recalled a lot of interesting thoughts going on during my dream, including two research ideas (one shared with my collaborator right before writing this and another needing more thinking), a visual image of an abstract cabinet drawer, and a scene of my mother at a bus stop seeing me off to a military service.
At that moment, I pondered whether I should write these down with potential sleep disruption or continue lying down with potential risk of forgetting everything later.
Apparently this pondering made enough imprint in my memory so that, even after opting for the latter, I could still recall everything.
PS:
Most of my ideas came from my day/night dreams, apparently during relaxed rational inhibition.
Thus I always try to keep healthy and consider stress a risk factor for both my life and work.