Same. I also find that sometimes I need "passive" time to think about the problem in the evening. And then when I come back to it in the morning, I have a bunch

Same. I also find that sometimes I need "passive" time to think about the problem in the evening. And then when I come back to it in the morning, I have a bunch of different ideas to try out. It's much more productive (and more enjoyable) than sitting at a computer, grinding away at a problem.