The extreme temperatures pose a serious health hazard. Frostbite is common, as is hypothermia. In the 1988 Yukon Quest, Jeff King suffered an entirely frozen hand because of nerve damage from an earlier injury which left him unable to feel the cold. King said his hand became "like something from a frozen corpse". In 1989, King and his team drove through a break in the Yukon River in temperatures. Frozen by the extreme cold, King managed to reach a cabin and thaw out. Other racers have suffered permanent damage from the cold: Lance Mackey suffered frostbitten feet during the 2008 Yukon Quest, and Hugh Neff lost the tips of several toes in the 2004 race.