This is a book by Loren Cordain, not Karnazes himself. I was just trying to point out that his idea of Paleo might not be as low-carb or fuel carb exclusive as you might think just from understanding that he eats Paleo. I read Born To Run where Karnazes is trashed up and down and all over the place, portrayed as an egomaniacal running machine. Then I saw Ultramarathon Man and I was so taken with him and his attitude. I thought he was such a great guy. I am nowhere near running an ultra (just zoning in on my first marathon - longest run 17 miles so far), but I really admire those guys, including posters here. Someday I will run an ultra somewhere.