How tired do you have to be?

Char woke me up at 1:30am yesterday morning talking in her sleep. This isn’t all that unusual; it actually happens quite a bit. She normally talks about the kids, has conversations, etc. (She laughed once, and honestly, that was a bit creepy.) But the other night was a first. I woke up when she said, “I am so tired.”

Now, exactly how tired do you have to be to dream about being tired?