Anger is a negative internal feeling state that is associated with rigid expectations, fantasies of revenge, and physical sensations such as muscle tension, rapid heartbeat, and feeling warm. Although anger does not always lead to aggression, aggression is almost always preceded by anger. Aggression may have many aversive consequences such as loss of relationships, physically hurting someone, and even jail. However, when felt intensely, frequently, or for a long duration, anger in itself may lead to diseases such as high blood pressure and coronary heart disease.
Rational Emotive Behavior Therapy (REBT)