Extreme Endurance Challenges
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Some competitors are able to crawl under barbed wire for miles. Others stay awake for days at a time. Readers will learn about some of the world''s most extreme endurance competitions and how athletes train for them.
Some competitors are able to crawl under barbed wire for miles. Others stay awake for days at a time. Readers will learn about some of the world''s most extreme endurance competitions and how athletes train for them.
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