A certified athletic trainer is a health professional specializing in sports injuries and athletic training. They work with their athletes to prevent injury and maintain good health. To earn certification, a trainer must have a bachelor’s (and often a master’s) degree and has passed all exam requirements by the Board of Certification for the Athletic Trainer. Athletic trainers are employed by schools, sports medicine offices, professional teams, hospitals, and individual athletes to recognize, treat, and rehabilitate injuries. Trainers are often on the field to spot signs of concussion or cardiac arrest and can administer CPR.