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What is Fear?

Emotions play an important part in our daily lives. Fear is one such emotion that is pre-programmed into all animals and people as an instinctual response to potential danger. As for what is fear biologically speaking, when a person experiences fear, certain areas in their brain such as the amygdala and the hypothalamus are immediately activated and appear to control the first physical response to fear. Chemicals such as adrenaline and the stress hormone cortisol are released into the blood stream causing certain physical reactions such as:
  • Rapid heart rate
  • Increased blood pressure
  • Tightening of muscles
  • Sharpened or redirected senses
  • Dilation of the pupils (to let in more light)
  • Increased sweating
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