Myth: Chilly weather will make you sick
While the notion that cold weather can bring on a cold seems to make sense—we even call the shift into winter “cold and flu season”—“it doesn’t matter how cold the temperature outside is,” says Dr. Mirwaldt. In fact, she says, it’s probably not outside but inside that counts: Spending more time indoors when the weather turns cold means we’re spending more time in closed—and potentially crowded—environments. There’s simply more chance you could catch something from other people.
So don’t skimp on time outdoors just yet—in fact, it’s probably good for you to get some fresh air. And forget that nagging warning from your mother, too—going into a winter’s day with wet hair isn’t going to make you sick, either.