Sleep
http://www.stevepavlina.com/ to find out about the sleep naps if you read about this in the book the game about neil strause , im gona give it a read. Did this sleep pattern for a week , couldnt get in to it, found that i was wasting more time trying to stay awake than actually enjoying the extra few hours of wakefullnes http://www.lifehack.org/articles/lifehack/information-list-of-polyphasic-sleep.html