Arnis is a type of martial art that comes from the Philippines. It's all about using sticks, knives, and other weapons to defend yourself and attack your opponent. Just like how you play with toy swords, in Arnis, people learn to use real sticks to play a game called "sparring." The goal is to touch your opponent with your stick without getting hit back. Sometimes, people even use bare hands or feet to fight. Arnis is a fun way to exercise and stay healthy while learning to protect yourself.