Introduction
The idea that 70% of body heat escapes through the head has been widely repeated. But where did this come from?
Origin of the Myth
- Based on a flawed military study where subjects wore cold-weather gear everywhere except their heads.
What Science Says
- Heat loss depends on exposed surface area.
- The head is only about 7-10% of total body surface.
Importance of Keeping Warm
While covering the head helps, other body parts lose heat just as much when exposed.
Conclusion
Dress warmly overall—not just your head—in cold weather.
