When you perceive something as a threat to you, your body activates part of your autonomic nervous system called the sympathetic nervous system which sends hormones through your body. These hormones cause various changes that you can notice – all of these changes are called the fight or flight response.
Stress can be good (known as eustress) or bad (distress). Eustress often comes from events or situations that are challenging, like going to college, getting a new job, or a new baby, but that ultimately lead to growth and success. Distress is caused by things like losing a loved one, losing a job, breaking up with a partner, and other difficult situations. Stress from these events can lead to negative health outcomes.
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Stress can affect how you feel, physically and emotionally.
There are different kinds of stress: acute, episodic acute, and chronic – https://www.apa.org/helpcenter/stress-kinds.
