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Old 01-12-2017, 08:40 PM
Mark in Idaho Mark in Idaho is offline
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Join Date: Feb 2009
Location: Somewhere near here
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Mark in Idaho Mark in Idaho is offline
Legendary
 
Join Date: Feb 2009
Location: Somewhere near here
Posts: 11,418
15 yr Member
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If that motion caused a concussion, you would be getting concussed many times each day. Many normal movements have more force than that.
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Mark in Idaho

"Be still and know that I am God" Psalm 46:10
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