Doctor Pon hasn't slept for over a month.
This is because he has had terrible nightmares; one about being attacked by a never-ending army of zombie-soldiers armed with bowie knifes, and one about playing football against a team of infants and yet being unable to run whenever he gets the ball.
But the reason Doctor Pon hasn't slept is not the dreams themselves. It is actually because he passed a billboard of a construction company which advertised: "We build your dreams".
Now obviously Doctor Pon doesn't want those dreams mentioned built, so he has to stay awake so that the construction workers don't find out what his dreams are.
However, the dream about being an elephant that lives on the moon and eats nothing but dairy milk was good, so maybe going to sleep is worth the risk...