More than 5 million people suffer concussions every year in America in sports and everyday life. Join the director of the NFL’s concussion study, Dr. David Okonkwo, and nine-year NFL veteran Chris Carr discussing what to do if you suspect a concussion on or off the field of play. Concussion -- not just a headache for pro football players, in this episode of the Brain Injury Awareness Project podcast, hosted by Erin Mattingly, chair of Northern Virginia’s Brain Injury Services.