David welcomes Dr. Chris Nowinski, the co-founder of the Concussion Legacy Foundation, a non-profit organization dedicated to solving the sports concussion crisis. Chris has been described by VICE Sports as “the man most responsible for making CTE part of the national conversation.” In part one, Chris explains how a pro wrestler turned into a trailblazing neuroscientist and why he chose to disrupt the way we handle head injuries in sports and in the military.