One of the biggest mistakes you can make in life is believing that you know everything there is to know. Even if you’re highly educated and brag about how brainy you are, there’s always—always!—something new to learn. If you keep your curiosity alive and well, and stay humble, you might fill in some of the biggest knowledge gaps you didn’t even know you had.

Today, we’re featuring some of the strangest, most interesting, and frankly mind-blowing facts about the human body that internet users shared in a couple of awesome online threads. Scroll down to check them out and, hopefully, learn something new.

When blind people win a competition they raise their arms in a victory salute, in spite of never seeing that done before. It seems to be inherent, and some suggest that it shows our connec

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