The CDC HEADS UP Concussion and Helmet Safety app will help you learn how to spot and what to do if you think your child or teen has a concussion or other serious brain injury. The application includes a helmet fit feature that teaches about proper helmet fit, safety and care as well as providing other tools and materials for youth and high school sports coaches, parents, athletes, and school and health care professionals that provide important information on preventing, recognizing, and responding to concussion.