Hat tip to MR for the pointer.
Thing learned just now:
"Immersing the face in water produces a protective action in humans similar to that in dolphins, seals, otters and whales. Called the mammalian diving reflex, it quickly lowers the heart rate and then constricts blood vessels in the limbs so that blood is reserved for the heart and the brain."
What is the link? Does it come from an article?
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