This is amazing result - If You Drop It, Should You Eat It? Scientists Weigh In on the 5-Second Rule u can eat it.
A little history to it:
According to Clarke, a senior at the Chicago High School for Agricultural Sciences, the 5-second rule dates back to the time of Genghis Khan, who first determined how long it was safe for food to remain on a floor when dropped there. Khan had slightly lower standards, however; he specified 12 hours, more or less
Among Clarke's findings more intresting are here:
--Women are more likely than men to eat food that's been on the floor.
--Cookies and candy are much more likely to be picked up and eaten than cauliflower or broccoli.
Read on further here 5-seconds rule