in treating accidental hypothermia. is too much cold bad? >> too much cold is a double-edged sword. it can kill you, and it can save you. it's amazing. it will kill you if your heart stops from cold before your brain is cold. to put it very simply. it will protect you if you get cold enough before you have cardiac arrest so that your organs do not need oxygen. we can do more for a cold patient before we lose him than in a warm patient. >> that its why the helicopter teams here don't warm people whose hearts have stopped in the cold. instead, they wait. it was a lesson they finally mastered with anna baggenhold. she nearly froze in an icy stream. she had no heartbeat for more than three hours. her body temperature, 56 degrees fahrenheit. no one has ever been that cold and then survived. is it something you take pride in, the fact that you -- >> no. no.