A friend of mine is very short tempered.
One day he urged his wife to prepare his daughter for the school. It was getting late.
She was tying her daughter's hair and the delay happened. When the school is over and the daughter is returned, the first thing my friend done was to cut the hair of his daughter who was just in fifth standard. He told his wife, there may be no delay in future. This is one example for his ill temper.
He is an engineer by profession. He services radios, televisions, calculators etc.
He made no friends, but people visit his shop as he is good at his work.
I have lost touch with him and recently I heard that he had paralysis and he could neither speak nor move. He was thin and lanky but his anger cost him his health.
I strongly feel, people who are cool, compassionate and not prone to anger maintain good health. On the other hand people who pick fights even without any reason loses their health and meet with lot of problems.
So be cool.