Brain cells have a harder time talking with each other when you don't get enough sleep.
That's the gist of a new study on sleep deprivation. It literally messes up the electronics in your head.
Researchers found that electrical bursts between neurons in your brain grow slower and weaker when you're sleep deprived. And that means problems with perception, reaction... and memory.
If nothing else, maybe reading the scientific explanation of all this (above article) will help you get to sleep.
Bottom line... without sleep, your brain cells can't talk to each other and you can't function the way you should.
Go to bed.