ThanksLegendary quarterback Y.A Tittle on his knees, bloodied up just after a play in which he threw a pick-six, suffered a concussion AND cracked his sternum. And he still finished the season by the way.
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iPads expand #concussion testing
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SportsU LiveStream: Concussions in Football - Understanding Injury, Safety and Technology - August 1, 2013
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Concussions in football are mostly caused by helmet to helmet hits.
Do your kids play football? Long-term Effects of Concussions in Football Have to Be Prevented #sports
Check out new work on my @Behance portfolio: "Concussion in Football" http://be.net/gallery/34298737/Concussion-in-Football
Will Smith Stars In Concussion Movie NFL CTE Football | The Daily Caller