That is very interesting, and makes sense out of something I've puzzled over. I'm a night owl, but I do my best writing in the morning. I wake up when the sunlight hits my face, stumble into the kitchen, pour a cup of coffee, and sit down at the computer to write while I'm still groggy and unfocused. Who'd have thought I'd been doing it right all this time. lol.
Any more I don't know when I do my best writing. Its like trying to catch lightning in a jar.
Interesting! I've been trying to stay away from the net and news before writing in the morning -- at least I'm getting that part right!