I just found this story to be very strange. 2004 Olympic Champion Justin Gatlin (from the University of Tennessee), who just returned from a 4-year doping ban, is still going to compete in the 100m at the World Championships despite getting frostbite in both feet two weeks ago. What makes this strange is the way in which he got frostbite. It was from wearing wet socks inside a cryogenic chamber used to cool his muscles after a hard workout. Bizarre.