Reading multiple books at once?

Do you read multiple books at once? I do, and it can feel like feasting at a buffet—a literary one. I am currently reading a non-fiction paperback and a fiction ebook. Since only the fictional novel has characters I need to keep track of, I don’t have to worry about confusing my characters’s dramas. That had happened to me before when I started a new fictional tale while in the middle of another one. I did that because I had borrowed a book from the library and needed to return it soon. It was quite the juggling act, keeping the plots from both books from dancing together. My brain enjoyed the workout.