In this series called “Human emotions”, I am planning to analyze psychological background of human feelings and their actual stemming places. One of the most intense emotional states, anger and aggression are the main problem in various societies. It is highly important to know how anger emerges in the brain and psychology of humans with the purpose of preventing these kinds of occurrences. According to the major articles and findings, anger is not the primary emotion; rather, it is thought to be a secondary emotion. In a broader sense, anger and aggression is the defense mechanism of our brains against any form of pain, including mental and physical. In my opinion, anger is the natural reaction of humans in case of any interruptions to their targets, goals and self-interest. Despite being highly natural, anger has a lot of psychological costs affecting humans` overall health in a bad manner. For instance, regarding medical side, angry people tend to live so severe diseases...