It does not matter if it is the World Cup or just an intramural soccer match. It is important to stretch and stay loose. Even though there are mixed opinions on the benefits of stretching, it is thought that stretching helps reduce injuries during activities, improve flexibility and improve range of motion for your joints. It is wise not to stretch cold muscles so make sure that you warm your body up a little bit before going into a stretching routine which allows increased blood flow to the muscles which in turn increases mobility. Warm muscles equals greater elasticity in the muscle.