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10/24/2014 12:40 pm ET Updated Oct 24, 2014

The Biology Of Fear: How Being Afraid Affects Your Body

Fear can make your spine tingle and your hair stand on end, but can being afraid actually kill you? "There's absolutely no doubt about it," according to Dr. Martin Samuels, the chairman of neurology at Brigham and Women's Hospital in Boston.

HuffPost Live's Nancy Redd got the scoop on the body's response to fear and how an extreme fright can hurt you during a Thursday conversation with Samuels and Jeff Wise, the author of Extreme Fear: The Science of Your Mind in Danger.

Check out the video above to find out how fear affects our bodies, and click here for the full HuffPost Live conversation.

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