Extra particularly, contact of your face with chilly water prompts the trigeminal nerve which triggers the mammalian diving reflex.
Dr. Younger defined: “It does this by signaling to the brainstem, which then prompts the vagus nerve, which is the principle nerve of your parasympathetic nervous system – which slows your coronary heart price.
“On the similar time, your brainstem sends alerts to the blood vessels in your extremities to constrict, which will increase blood stress.
“It is a reflex that means that you can adapt to being underwater – a slower coronary heart price conserves oxygen ranges, and diverting the blood out of your limbs means your mind and organs get extra blood circulation.”
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