As the new coronavirus spreads across the globe, people are staying 6 feet (1.8 meters) apart, washing their hands and avoiding touching their faces. Or at least they're trying to. Ignoring an itchy nose or hair in your eyes is easier said than done. Even professionals who should know better get caught by the impulse. Medical school students being trained in infectious disease prevention, for example, touched their faces 23 times an hour during a lecture, according to a 2015 study in the American Journal of Infection Control.