How can philosophers sleep?

I finally again engaged in some philosophical thinking. And it makes me so excited! I can't sleep! Actually this excitement is really counterproductive, as the only thing I can stand doing is walking up and down... I need to study for an exam, but I can't sit! Dude!
How do philosophers sleep?!

Also: anybody reading this still being able to decide over their course of life: If you ever come into the position of choosing between philosophy and psychology -- you know what you godda do.

Cuando tomes tu café...

I heard this song on the radio and I liked it.