Former Chicago Bears player Hunter Hillenmeyer speaks during a news conference held by the Chicago Concussion Coalition Monday, Aug. 22, 2011, in Chicago as Chris Nowinski, left, chairman of the ... more 
Former Chicago Bears player Hunter Hillenmeyer speaks during a news conference held by the Chicago Concussion Coalition Monday, Aug. 22, 2011, in Chicago as Chris Nowinski, left, chairman of the coalition listens. Hillenmeyer was part of a workshop for high school coaches, administrators and trainers in Chicago, which in January passed an ordinance requiring public and private schools to take athletes who show concussion symptoms off the field. (AP Photo/M. Spencer Green) less 
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Associated Press | Photo By M. Spencer Green
Mon, Aug 22, 2011 5:05 PM EDT