Fear is a powerful and primitive human emotion. It alerts us to the presence of danger, and it was critical in keeping our ancestors alive. Fear can be divided into two responses: biochemical and emotional. The biochemical response is universal, while the emotional response is highly individual.
Fear is a natural emotion and a survival mechanism. When we confront a perceived threat, our bodies respond in specific ways. Physical reactions to fear include sweating, increased heart rate, and high adrenaline levels that make us extremely alert.
This physical response is also known as the “fight\n or flight” response, in which your body prepares itself to either enter combat or run away. This biochemical reaction is likely an evolutionary development. It’s an automatic response that is crucial to our survival.
The emotional response to fear is highly personalized. Because fear involves some of the same chemical reactions in our brains that positive emotions like happiness and excitement do, feeling fear under certain circumstances can be seen as fun, like when you watch scary movies.