How does a fan cool you down?
Fan's Sneaky Trick
How does a fan cool you down?
It's a hot summer day and you're melting into the couch. You click on the fan, and suddenly — ahhhh, relief. But wait. The fan isn't making cold air. It's just spinning blades pushing the same warm room air at your face. So why does it feel so good?
Here's the sneaky trick: your body is always making heat, like a tiny furnace burning fuel to keep you alive. And right now, your skin is covered in a thin layer of warm, humid air that's just sitting there like a blanket you can't see.
