Anger is an emotional reaction to frustrations, violations, or perceived threats. Our body responds to this potential threat by increasing our heart rate and muscle tension to prepare us to defend ourselves.
Anger is different from aggression.
Aggression is a learned behavior, not an emotion. Anger does not automatically lead to aggression. Instead, some people just learn to behave aggressively when they are angry. Anger is a normal experience. Anger is a problem when it harms you, the people around you, or your relationships.