Flight or Fight Response

Definition

The flight or fight response is an automatic physiological reaction to an event perceived as stressful or frightening. It prepares the body either to confront or flee from potential harm.

Related terms

Sympathetic Nervous System:

Part of the autonomic nervous system that triggers the flight-or-fight response when danger is perceived.

Adrenaline/Epinephrine: A hormone released into the bloodstream in response to physical or mental stress (like seeing a bear). It increases heart rate, muscle strength, blood pressure, and sugar metabolism - all part of preparing for 'fight' or 'flight'.

Stressors:

Anything (physical or psychological) that produces stress (or is perceived as stressful).