I got a terrible night of sleep and have an interview this afternoon. What are some things I can do to help my brain?

I'm super drowsy even though I had some caffeine. I'm drinking lots of water and eating healthy foods, but is there anything else I can do in the meantime?

How do you make yourself feel better after a poor night of sleep?

Edit: It went well! The director even said, "we should just hire you now!" However, I have one more panel interview. Time for a nap.