WHY do some people like to fight? A person who fights occasionally is much different from a person who wants to fight all the time. People can be upset in many ways. They can be frightened, depressed, sad, discouraged or just plain down on themselves. Many times people fight because they are upset - even though it might seem as if they were just mean or nasty.
When people don't like themselves, they often believe that others don't like them. That makes them afraid. Fear can make people attack. Also, families and even neighbourhoods or other groups have different ways of acting out their feelings.
No one knows exactly how the brain works. But more and more is being discovered. For example, we know there are billions and billions of cells in the brain. Most of the cells communicate with each other by electrical and chemical signals.
More than 50 different transmitters have been identified in the brain. And experts know that more than 100 chemicals are used in the process of thinking. The structure of the neurons, or transmitters, helps the brain process information.