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Stress response (fight-or-flight response)

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Stress response (fight-or-flight response)

The stress response is the set of physical and emotional changes the human body makes in response to a threat or stress. It sometimes is called the "fight-or-flight" response.

In a stressful situation, the body releases chemicals that trigger:

  • Increased heart rate and blood pressure.
  • Rapid breathing.
  • Increased sweating.
  • A sudden rush of strength.
  • Slowed digestion.
  • Dilated pupils.

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This information does not replace the advice of a doctor. Healthwise, Incorporated, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.