People of Asia used martial arts on the battlefield for thousands of years. Karate means empty hand and it relies on high-energy punches, strikes, and kicks using only the fighter’s body. Karate has a color-coded system of graded levels of competency (belts) starting with white, then yellow, orange, green, and purple for beginners. Brown and black belts are signs of karate masters. Watch people practice karate. Notice how their bodies look when they get ready, kick, and do other moves.