Because small problems become angry and unclear, 

why try that? possible rise in blood pressure.

According to halodoc.com:
Increasing age is one of the triggering factors for high blood pressure. That is, the older a person is, the higher the likelihood of experiencing hypertension. This happens because blood vessels tend to harden in old age.

It's also true if you look at the study. However, these emotions can be controlled by positive thinking. This matter does not apply to people who experience emotional outbursts, the same as pouring water on a big fire. It's becoming more and more flaming. There's no point in advising someone who's emotional, unless he's done with his anger (and that's if the advice comes from people who are really close to him).

In this cartoon illustration, I'll say about this emotion, a person is angry because his cat is being kicked out by someone (perhaps being kicked with his feet). and that he heard from his friend who is a fellow cat lover. Feels that he has more power than his cat bully suspect. he became so and then vented his anger on the person who was thought to have tackled his cat.

Accuser: “Hoyy!!! You're the one who kicks my cat heuhh!!!, Admit you!!!"
Accused: “Hmmm, maybe he needs coffee.” so in his heart.

It means, even though it's trivial, you still face the problem with a smile.