If the SNS is chronically activated, it can impact your health.
Learn about the sympathetic nervous system function and your body’s response to perceived danger.
What Happens When the Sympathetic Nervous System Is Activated?

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The sympathetic nervous system causes physical changes all over the body.
Summary
The sympathetic nervous system helps to protect you from danger.
Physical changes take place to make the body and mind more able to respond to the threat.
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