Anger is not only a emotion but also a chemical reactions in our brains and bodies. A few minutes of anger can make a person exhausted in the manner like he has physically worked hard for hours. Beings frequently angry affects our physical and mental health very badly. So it is very necessary to control anger and practice techniques to be calm and relaxed.
I used to be a short tempered person but after observing the effects of anger on health I try to control my temper.