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The fight-or-flight reaction involves physiological changes like increased heart rate, pupil dilation, and shaking to prepare the body for confronting or fleeing from threats.
The "fight-or-flight" reaction is associated with various physiological changes aimed at preparing the body to either face a threat or flee from it. Key components of this response include increased heart rate, which helps pump blood faster to deliver oxygen and nutrients to muscles, and pupil dilation, which enhances visual acuity to quickly assess the surroundings for potential dangers. Other effects involve shaking to mobilize energy reserves and increase alertness.
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