I keep a notebook in my bedside drawer for that exact reason. I have/had no idea whether it was based on any science or just placebo, but the number of times I'

I keep a notebook in my bedside drawer for that exact reason. I have/had no idea whether it was based on any science or just placebo, but the number of times I've been nodding off and suddenly had a really good idea or solved a problem I've been stuck on, led to my wife buying me a notebook because she was sick of me saying "I'll remember it in the morning" then... not remembering it in the morning.