By Tori Rodriguez
You know that colds, the flu and even yawning are contagious, but you probably don't know some unexpected emotions and behaviors-some good and some not-so-good-also can catch on. Researchers believe these encourage people to cooperate with each other and understand what can help them and hurt them so they stay healthy and out of harm's way. But we often share this info without realizing it through body language, facial expressions and even scent. Here are 10 surprising things you just might pass on to people around you. Photo by Getty Images.
1. Stress. Talk about sharing the load: Research from the March 2012 issue of Social Neuroscience found that merely seeing an anxious person can up your own cortisol, a stress hormone. In other research from Social Cognitive & Affective Neuroscience, people became more alert when exposed to the undetectable odor of sweat from a stressed-out person. These cues may prepare us for potential danger, says Lilianne R.Read More »from 9 Weird Things You Didn’t Know Were Contagious