Survey: Concussions inevitable
Washington Redskins kick returner Rock Cartwright remembers his brain "shaking like a bell" when he was walloped in a game against the New York Giants a few years ago.
"You know how a bell vibrates? That's how my brain was going at that time," he said. "I think five minutes later, I came back to myself. I went back out there and played football."
What Cartwright never did when the hit happened? He never told Washington's medical staff his head ached.
He's not alone. Thirty ...
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