Find out about the sympathetic nervous system, which causes your fight or flight response, and learn more about how it functions.

Learn about the autonomic nervous system. Discover different health problems and symptoms that can affect this system.

Also called acute stress response or hyperarousal, the fight-or-flight response is caused by the activation of the sympathetic division of the autonomic nervous system, which controls several ...

The sympathetic nervous system (SNS) is part of the autonomic nervous system (ANS), which also includes the parasympathetic nervous system (PNS). The sympathetic nervous system activates what is ...

The autonomic nervous system is a complex network of cells that control the body's internal state. Read on to discover how it works.

Your autonomic nervous system helps regulate emotional balance, but chronic stress or trauma can trigger an overactive fight-or-flight response.

When the nervous system is dysregulated, one branch may become overactive, or the body may flip between the two states more quickly than usual.⁵ This can result in a persistent fight-or-flight ...

When the body is threatened, the sympathetic nervous system takes over, readying the body’s fight or flight response.

The parasympathetic nervous system performs its functions using the cranial and sacral nerves, according to the medical resource StatPearls.

These mechanisms exist as part of the body's autonomic nervous system, which can be thought of as a continuum, suggests popular Stanford Medicine researcher and neuroscientist, Andrew Huberman.

We all experience fight, flight, freeze, and fawn, but for those with trauma history, these responses to stress can become harmful.