3. Fear. Just like anger, this emotion is closely connected to our survival instinct and serves to warn us of threats or potential harm. When human beings lived in the jungle, fear was essential for detecting imminent danger and preparing our body to fight or flee. As with anger, fear activates the secretion of adrenaline and noradrenaline, which cause our pulse and blood pressure to skyrocket, also making us hyperventilate. Other physical symptoms of fear include sweating, shaking, and muscle tension, which can sometimes make us feel paralyzed. Just like with anger, the problem is that our
  
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