What kind of psychology does a person always like to make a fist to explain?

A person always clenches his fist unconsciously. From a psychological point of view, this is a subconscious reaction. It is an emotion expressed by the subconscious mind. It's a sign of nervousness. A manifestation of suppressing unhappiness in the heart. It could also be a sign of anger. Fist itself also means defense and attack. Fist-making is a kind of self-encouragement and self-motivation. Do you often look unhappy, do you have any troubles, or are you timid at ordinary times, and some can't let go. Most of his fists are psychological hints to himself, so he can only have them by clenching his fists, and only by clenching his fists can he have a strong sense of quantity.