Yuki Kawauchi is a beast

http://japanrunningnews.blogspot.com/2011/06/kawauchi-taken-to-hospital-after.html

I just found this online... Yuki is the 2:08 marathon PR amateur that pushes himself so hard that he ends up in the med tent at the end of pretty much all of his races. He was apparently racing a hot and hilly 50K and led from the start to 49.4K, where he passed out and had to be hospitalized. Nuts...