anyone living in cold countries know most of the heat is lost through the hat. Those folks think they know. What they don't know is the "X% of heat lost throug

anyone living in cold countries know most of the heat is lost through the hat. Those folks think they know. What they don't know is the "X% of heat lost through your head" myth is based on a poorly-run U. S. Army study from the 50s. I'd provide a link, but it's trivial to search for one from a source of your choosing.