How much of your body’s heat do you lose by not covering your head in the cold? July 11, 2020 by Pamela Landy Your mother was right. You lose about half to three-fourths of heat from your head. Related Answers What was the name of the high school in “Room 222” (ABC, 1969-74)? What are the five tallest buildings in New York City? How much is the human body worth? What do you call the covering on the end of a shoelace? How much hair does an average person lose each day? Why do we get goose bumps when it’s cold?