Nation Mummified skin, hypothermia: What happens to your body in minus 50 degree wind chill? January 29, 2019Diana Dombrowski, Sheboygan PressComments Off on Mummified skin, hypothermia: What happens to your body in minus 50 degree wind chill? Dr. Michael DeFrank, emergency medicine physician at HSHS St. Vincent Hospital in Green Bay, talked to us about extreme cold.