Anger is a basic human emotion, as fundamental as joy, sadness, fear, or disgust. These emotions are a part of our basic survival and have evolved over time. Depending on our life experience, our nervous system determines which survival response will offer the greatest potential of survival.
Anger is a part of the “fight, flight, or freeze” response of the sympathetic nervous system. It is there to protect us from potential danger by preparing one to fight. Fight can be expressed in many forms. It can be a preparation for a physical fight, verbal fight, or even a legal battle. The point is that the instinct of fight, occurs when the nervous system decides that “fight” will offer the greatest potential of survival.