Sports injuries are injuries that typically occur while participating in organized sports, competitions, training sessions, or organized fitness activities. These injuries may occur in teens for a variety of reasons, including improper training, lack of appropriate footwear or safety equipment, and rapid growth during puberty. Often overuse injuries seem less important than acute injuries. You may be tempted to ignore that aching in your wrist or that soreness in your knees, but always remember that just because an injury isn’t dramatic doesn’t mean it’s unimportant or will go away on its own. If left untreated, a chronic injury will probably get worse over time. Learn more about pulled muscles and the ways to treating muscle pull.