i havent read the book but i have a question. is it possible that some people need more hours a day of sleep than others. i sleep on average 8-9.5 hrs a night and i still feel really tired . i have always been a sleeper and when i was a baby there was never a problem with me not wanting to go to bed or take a nap. even in highschool whwn my friends were out i would be asleep by 8:30 and never really want to stay up. I fall asleep during movies constantly. Is it possible that i am just a person who requires more sleep. when i have days of from work and sleep whenever i feel like it i dont have any problems with energy so i really think it is sleep deprivation and not a disease or something. i know articles say 8 hours is ideal but i know that doesnt even come close to being enough. Am i just lazy or what?