This document provides a brief history and overview of Arnis, a Filipino martial art. It originated in the Philippines as a defensive art and was originally called Kali during Spanish colonization. It focuses on fighting with bladed weapons and large blades. Modern Arnis was developed and popularized by Remy Presas. The document also discusses the physical principles, equipment, facilities, and exercises used to prepare the body for Arnis, including calisthenics, limbering exercises, and muscle strengthening.