All mammals have the diving reflex, including humans. The diving reflex is the body's physiological response to submersion in cold water and includes selectively shutting down parts of the body in order to conserve energy for survival.

The diving reflex is the body’s physiological response to submersion in cold water and includes selectively shutting down parts of the body in order to conserve energy for survival.

>heart rate slows dramatically, which decreases the amount of blood circulating through its body. Metabolism, the process by which cells create and use energy, declines in the unused parts of its body.

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