Why do we scream in terror?

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A terrified facial expression actually has a purpose. Screaming in terror and the face you make when you're frightened actually boost your chances of survival in perilous situations. How?

Screams of Terror - Science on the Web #29


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Key Facts In This Video

  1. The faces we make when scared are unconsciously strategic and boost our chances of survival. 00:42

  2. Risorius muscle controls expressions of fear and terror. 01:22

  3. The more irregular a scream or yell is, the harder it is to be ignored. 01:50

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