check out this guy who runs ultramarathons! he's run 226 miles straight...he has a book out, a great read, he was just on 60minutes this past sunday, his tips, etc., are in esquire every month and, he just happens to be my neighbor for the last several years - we say hi but don't know each other...used to see him at the gym, he's in just incredible shape and his book is very, very inspirational...

www.ultramarathonman.com