20 Tips To Prevent, Treat Colds and Flu

RELAX.

Yes, the flu can make you sick, but guess what? Stress can, too: People who report psychological stress are less likely to develop protective antibodies in response to the flu vaccine, according to a 2009 review of 13 existing studies, which was published in Brain, Behavior, and Immunity. "It's important not to become completely obsessed and compulsive," Dr. Adalja says. "During a flu season like this, when the virus is spreading among humans in every type of environment and community, you're going to be exposed to it — even if you live in an overly sterile environment."