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Legendary
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Join Date: Feb 2009
Location: Somewhere near here
Posts: 11,427
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Legendary
Join Date: Feb 2009
Location: Somewhere near here
Posts: 11,427
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What in-built protection mechanism are you referring to ?
Studies show that the brain loses more tolerance for impact forces with each concussion. After my lifetime of concussions and sub-concussive impacts, I can give myself a concussion by shaking my head .
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Mark in Idaho
"Be still and know that I am God" Psalm 46:10
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