The “five-second rule” is a myth

By Andy Rice 21 July 2010

According to an article in the July National Geographic, we should forget about the "five-second rule" (the one that lets you pick up and eat food you've dropped on the floor, as long as you do so within five seconds), and instead stick by the zero-second rule. Research is still out on the matter, although the general consensus is that it's not the time that's a factor, but the location (the pavement is probably cleaner than your kitchen floor, in terms of bacteria). We just have one question: what's the time limit for popcorn dropped on the office floor? Read more: Chicago Tribune