Ooooh very interesting idea. I also have nothing to back it up, but it fits my mental models. When juggling multiple things as humans, it eats up your context

Ooooh very interesting idea. I also have nothing to back it up, but it fits my mental models. When juggling multiple things as humans, it eats up your context window (working memory). After a long day, your coherence degrades and your context window needs flushing (sleeping) and you need to start a new session (new day, or post-nap afternoon).