The emotion, Anger, also known as wrath, is an intense emotional state. It involves a strong uncomfortable and hostile response to a perceived provocation, hurt or threat.A person experiencing anger will often experience physical conditions, such as increased heart rate, elevated blood pressure, and increased levels of adrenaline and noradrenaline. Some view anger as an emotion which triggers part of the fight or flight brain response.
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The divorce is not valid because of the anger.
Moreover, according to some jurisprudence (Jafari) these 3 or 4 divorce should be in different times or sessions . In one session it is considered one divorce even if he says "I divorced you 3 times".