Be sure to wear shin guards and appropriate soccer cleats during games as well as practices. Warming up, especially your leg muscles, is very important. To avoid headaches and dizziness, use your head and learn the proper technique for heading a ball in a game. Many leagues have strict rules about wearing jewelry, watches, and barrettes during games. Since any of these items can cause you to get hurt if you're hit with a ball, it's a good idea to not wear them when you play. Also, to protect your mouth from collisions (especially if you have braces), wear a mouthguard.