Self-defense is protecting yourself from someone who is trying to hurt you. If someone pushes you at recess and you raise your arms to block another push, that's self-defense. If someone swings at you and you duck or step back to avoid getting hit, you're defending yourself.

Self-defense means responding to an actual threat, not starting a fight or getting revenge. There's an important difference: if someone insults you and you punch them, that's not self-defense because words aren't physical attacks. But if someone grabs you and you pull away or push them off, you're protecting yourself from harm.

Many people take self-defense classes to learn techniques for staying safe. These classes teach practical skills: how to break free if someone grabs your wrist, how to be aware of your surroundings, and when it may be safer to run away instead of fighting.

The law recognizes self-defense as a valid reason to use physical force, but only when necessary to protect yourself from immediate danger. You can't claim self-defense if you use much more force than needed to stop the threat. The core idea is simple: everyone has the right to protect themselves from harm, and the safest choice can be to get away and get help.