Viruses are contagious, but stress? Really? You can catch anxiety just as quickly as a cold. However, you’re used to recognizing the symptoms of a bug like coughing and sneezing and can avoid people who have them. Second-hand stress, though, might seep into your psyche before you’ve put up your guard. There again, is there a tactic you can use against other people’s stress? The answer is yes, but you have to be aware of it before you can protect yourself.