NFL report: concussions dropped 50 PERCENT when players wore new 'Guardian Caps' over the summer
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Puffy Guardian Caps Could Reduce NFL Player Concussions
The after school issue — The Hippo — 08/18/22 by The Hippo - Issuu
NFL report: concussions dropped 50 PERCENT when players wore new 'Guardian Caps' over the summer
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NFL says positions wearing Guardian Caps saw 52% decrease in concussions - NBC Sports
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NFL players wear Guardian Caps to reduce head trauma during training camp
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Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post