Is it true that … you lose most body heat from your head?
This 1970s notion is a bit of a myth – but it’s still a good idea to wear a hat if it’s cold out
TL;DR
- The idea that 40-45% of body heat is lost from an uncovered head is a myth.
- Body heat loss occurs from any exposed area of the body, not specifically the head.
- The head has less natural insulation due to less body fat compared to the rest of the body.
- Vasoconstriction, a process to conserve heat, may be less effective on the head.
- Covering the head and face is still recommended in very cold weather to prevent heat loss.