Find out why we blink and what happens when we sneeze in these YouTube videos curated by Nat Geo Kids!
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Three hundred hours of video are uploaded to YouTube every minute! That's a lot of video to sort through. Luckily, National Geographic Kids has done the work for you. We're bringing you the best videos the Internet has to offer!
Check out these amazing YouTube videos all about the mysteries of the human body, curated by Nat Geo Kids!
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