I know what you mean! :)  I recall another phenomenon of a person who used to function for most of his life on 3-4 hours of sleep per night. It was Andres Segovia, a famous classical guitarist. His story was that his parents would not have encouraged him to pursue music - but he loved playing the guitar. So he would get up in the wee hours to leave his house and go into a nearby garage to practice...and the rest is history! I just love stories of determination, living life on purpose, focus, determination - and WINNING! don't you?