<documents_info>The Science of Baseball Batting,History of Protective Gear in American Football,Nutritional Needs of Marathon Runners,Psychological Effects of Extreme Sports,The Physics of Swimming</documents_info>
<query>How has the design of football helmets evolved to improve player safety according to the provided documents?</query>
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<documents_info>The Science of Baseball Batting,History of Protective Gear in American Football,Nutritional Needs of Marathon Runners,Psychological Effects of Extreme Sports,The Physics of Swimming</documents_info>
<query>How has the design of football helmets evolved to improve player safety according to the provided documents?</query>
user
Chunk
assistant
How has the design of football helmets evolved to improve player safety according to the provided documents?
The Science of Baseball Batting,History of Protective Gear in American Football,Nutritional Needs of Marathon Runners,Psychological Effects of Extreme Sports,The Physics of Swimming