Sometimes, when I'm tired or sick, I speak more formally and use contractions more sparingly than usual. When I'm under the weather, even when I'm just talking to myself, it's not unusual for me to say things like, "I have not fed my cat yet. I must feed her because that is something I have not done."
I'm not sure why being sleep-deprived or having a cold or the flu sometimes makes me start talking like a "Mark Trail" character. After all, I would think that feeling lethargic would make me want to condense my thoughts instead of prolonging them. Then again, it often takes longer to process even the simplest thoughts when you don't feel well, so maybe there's some logic in there.
