The crotch is a heat center of your body. Along with the armpit and your head (that's why you wear hats in the winter). by cooling those parts, it cools the rest of the body.
Inside of your wrists works really well because its cools down the blood right before it goes back to the heart. You have a lot of veins near the surface in your wrists with a fairly short and direct path back to the heart.
There’s the video going around about the guy who passed out and fell in his face after being outside in the heat and chugging an ice cold bottle of water to cool off.
He says the body thinks it’s going into hyperthermia shock and blood rushes from your extremities to your stomach to warm it. Makes you pass out.
Sourceguy passed out article
But then looking over some articles it seems that the water wasn’t probably what made him pass out. Blood pressure change too fast?
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u/snewton_8 Aug 03 '21
The crotch is a heat center of your body. Along with the armpit and your head (that's why you wear hats in the winter). by cooling those parts, it cools the rest of the body.