• A quick demonstration of the Mammalian Diving Reflex. Here, I dunk my face in cold water for a few seconds, lowering my heart rate from the 100s, into the 60s. • Dunking your face into cold water stimulates the trigeminal nerve, which sends signals to the brain to activate the parasympathetic nervous system via the vagus nerve, thereby lowering heart rate. • Physiological responses include: \t•\tLowered heart rate \t•\tConstriction of blood vessels in the extremities to shunt blood toward the
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• A quick demonstration of the Mammalian Diving Reflex. Here, I dunk my face in cold water for a few seconds, lowering my heart rate from the 100s, into the 60s. • Dunking your face into cold water stimulates the trigeminal nerve, which sends signals to the brain to activate the parasympathetic nervous system via the vagus nerve, thereby lowering heart rate. • Physiological responses include: \t•\tLowered heart rate \t•\tConstriction of blood vessels in the extremities to shunt blood toward the
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