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What actually happens to your body when you jump into cold water

Your body's cold water response goes from survival mode to something surprising fast Have you ever jumped into cold water — what did it feel like in your chest?

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Your body's cold water response goes from survival mode to something surprising fast Have you ever jumped into cold water — what did it feel like in your chest?

Transcript

The second you hit cold water, something takes over. Your heart rate can spike dramatically — your body thinks it's drowning. But if you stay calm, the vagus nerve kicks in — and the panic fades. Follow for more on what your body can actually handle.