Certainly playing a contact sport, especially on the professional level, comes with the risk of injury. Injuries are part of a professional athlete's life. But injuries can also take place on a pee-wee football field, the ski slopes, or a local bike path. In fact, the Centers for Disease Control and Prevention estimated that 1.6-3.8 million sports- and recreation-related concussions occur in the United States each year. And women and girls are just as likely as men and boys to sustain a brain injury playing sports.