9781422273838

When you perceive a threat, a sort of 911 call is sent to your amygdala, which is the part of your brain that’s in charge of emotions, memories, and—most importantly here—survival instincts. That 911 call results in a hormone called adrenaline (also known as epinephrine) surging throughout the body, causing your breathing and heart rate to increase and your muscles to tense up. For a short time, you are physically stronger than normal, and your brain is more alert as you assess whatever in your environment is making you feel threatened.

The body produces a fight-or-flight response to stress.

Stressed Out

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