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Is the 5-Second Rule true?

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If we pick up dropped food quickly, is it still safe to eat? How quickly does bacteria on the floor move to the food? Some people call it the “5-Second Rule” or the “10-Second Rule,” even the “2-Second Rule.” But is there any truth to it, or is it just something we say to allow us to eat food off the ground? Vsauce investigates.

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