“Five Second Rule” disproved
Popular urban legend has it that you can safely pick-up food from the floor after five seconds (or ten seconds, stretched by some) before it is contaminated. Whether people actually believe this is another thing, since it is likely a way simply to justify eating the item without having to throw it away. In any case, researchers at Rutgers University decided to put this practice to the test, and discovered that it is possible for bacteria to transfer to food in less than one second. They did point out, however, that the length of contact time with a surface does impact the extent of contamination, as do other factors such as the types of food and surfaces themselves.
Now you know!