02:50More or LessHow much heat do you lose from your head?BBC World Service Duration: 9 minutes Tue 10th Mar 2020, 02:50 on BBC World Service East and Southern AfricaAvailable for over a yearListen nowIs it true that 40% of your body's heat loss comes from your head? Show more GenresFactualFormatsMagazines & ReviewsBrandMore or Less Source: BBC Online