Psychology
What is The fight-or-flight response?
The fight-or-flight response is the body's automatic reaction to a perceived threat. It floods you with adrenaline, speeds your heart, and sharpens focus — preparing you to either confront the danger or flee from it.
See it, don’t just read it.
Watch a 2-minute lesson with voice + animation that explains the fight-or-flight response.
Key things to understand
- 1It's an automatic reaction to perceived danger.
- 2Adrenaline and other hormones surge through the body.
- 3Heart rate, breathing, and alertness all spike.
- 4It prepares you to fight the threat or run from it.
Frequently asked questions
- What is the fight-or-flight response?
- The body's automatic surge of energy and alertness that prepares you to face or flee a threat.
- What triggers fight-or-flight?
- Any perceived danger or stressor, which the brain's alarm system reacts to instantly.
- Why do we feel shaky when scared?
- Adrenaline primes muscles for action, causing trembling, a racing heart, and heightened senses.