I have this new initiative in my life, and I’m trying to push my colleagues to do it, too, where I want to work less and think more. In a given month, I do a lot of very mediocre stuff, but once in a while I come up with a really good idea. Maybe I’ll come up with two in a month. Those two inevitably happen when I’m either falling into a nap, or coming out of a nap, or waking up slowly on a Saturday morning. I’m trying to engineer more of those in my life. I’m trying to encourage more people to have naps because, hopefully, more people will have these brilliant ideas.
Brian Halligan, CEO of Hubspot, in an interview by Adam Bryant
I also find the interstitial time between waking and sleeping to be the source of insights and creative ideas.