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Body Chill: How does your body cope with cold?
How does your body survive cold? Remarkable thermal imaging shows what happens in Helen's body after half an hour in water 20 degrees lower than body temperature.
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More clips from A Temperature for Life
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How does your body cope with cold?
Duration: 01:52
More clips from From Ice to Fire: The Incredible Science of Temperature
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The quest for nuclear fusion—Series 1, Playing with Fire
Duration: 02:29
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How does your body prevent overheating?
Duration: 02:41
