I've had some really bad cases of insomnia in the past... and when I say bad, I mean 3-4 months with no more than 2 hours of sleep a day, if any. I was so tired that my eyes were literally on fire 24/7, and when I came home from school for lunch, I sometimes fell asleep while eating. (I still never fell asleep during class believe it or not. lol)
Is it a bad sign that the song I'm listening to right now is actually called Insomnia? Complete coincidence.