You can also try to improve your core strength by doing crunches or other abdominal exercises. A strong set of stomach muscles will help you maintain your balance during games and will help strengthen your shot. Stretching and flexibility are important for almost all sports, and soccer is no exception. Being flexible will help you avoid injuries and can help your muscles react more quickly during the games. Stretching out your major leg muscles, like your quads, calves, and hamstrings, will make you a better player.