Slather on sanitizer. Wipe down surfaces. Repeat.
It's become a familiar ritual in our battle against germs, but the dirty little secret is that most germs are harmless and, in fact, many are good for us.
"If you're in a normal environment and you're not exposed to germs, overuse of hand sanitizers might actually make you more susceptible to the next infection that comes along," says Dr. Richard Gallo.