Ever heard someone say, “Put on a coat, or you’ll catch a cold”? It’s the kind of advice many of us grew up hearing, often from well-meaning parents or grandparents.

But how true is it? Does the chill in the air actually have the power to make you sick? Spoiler alert—it’s a bit more complicated than it seems! Let’s separate fact from fiction and get to the bottom of this frosty myth.

The Origins of the Myth

Ah, the old “cold weather equals colds” belief. It’s been around for generations. You might even picture your mom sternly wrapping a scarf around your neck as she says it. But where did this idea come from?

The myth likely began because more people tend to get sick in winter. It seems logical enough—cold weather arrives, and suddenly everyone around you is coughing or sneezing. Over time, parents and grandparents passed this theory down to keep us bundled up and, presumably, to keep us healthy.

It’s also worth noting cultural influences. Many traditions around the world emphasize staying warm as a way to ward off illness. While there’s truth to the idea that staying warm is good for you, it turns out the connection between being cold and catching a cold is more coincidence than cause-and-effect.

The Science Behind Getting Sick

Here’s the deal on colds and the flu—they’re caused by viruses, not cold weather. Rhinoviruses, the most common culprit of colds, are around all year but spread more easily during winter. Similarly, flu season peaks during the colder months.

Why does winter see a spike in sickness, then? Here’s what science has to say:

• Close quarters = more germs. Cold weather often keeps us indoors, where we spend more time in close proximity to others. This increases the likelihood of viruses spreading. Think crowded offices, classrooms, or public transport. In the summer, we might have a party on the patio. In the winter, everyone is in the living room.
• Dry air is a virus’s best friend. Cold weather also brings dry air, both indoors and out. This can dry out the mucous membranes in your nose, making it easier for viruses to get in and infect you.
  So, while cold weather doesn’t directly cause illness, it sets the stage for germs to flourish. You could say the weather gets an assist, but it’s the viruses doing the work.

Why Cold Exposure Is Still a Concern

Now, just because cold air doesn’t cause colds doesn’t mean being out in freezing temperatures isn’t something to take seriously. Prolonged exposure to the cold can weaken your body temporarily. For instance:

• Shivering and reduced blood flow. When your body gets too cold, it works overtime to keep your core temperature stable. This can leave you feeling drained and less resilient if you’re already fighting off germs.
• The real dangers of frostbite and hypothermia. While not related to getting sick, these conditions are serious risks during extreme cold. Frostbite damages skin and tissue, while hypothermia can dangerously lower your body temperature.
  Staying warm and dry during cold weather isn’t about dodging colds—it’s about keeping your body safe and happy.

How to Stay Healthy During Cold Weather

Thankfully, staying healthy in winter doesn’t require huddling indoors or avoiding the chilly air entirely. Here are simple, practical ways to keep sickness at bay (and Grandma happy!):

• Wash your hands. Viruses spread through touch, so wash your hands frequently with soap and water. Carry hand sanitizer for when you’re on the go.
• Get vaccinated. A flu shot is one of the best ways to protect yourself and others from the flu.
• Eat well and hydrate. Support your immune system with a balanced diet rich in fruits, vegetables, and lean proteins. Don’t forget to drink plenty of water, even when it’s cold.
• Dress for the weather. Layer up and keep exposed skin protected, especially in extreme cold. A hat, gloves, and warm socks go a long way.
• Keep your indoor air moist. Using a humidifier can help combat the drying effects of heated indoor air, which keeps your nasal passages ready to fend off invaders.
  These habits not only help you avoid getting sick but also ensure you’re looking after your overall health.

Conclusion

So, does being out in the cold really make you sick? Nope! The cold air itself isn’t to blame. Illnesses come from viruses, not the temperature outside. However, the factors that come with cold weather—dry air, close contact with others, and less sunshine—make it easier for those viruses to spread.

That said, staying warm has its benefits. It protects you from cold-related risks like hypothermia and keeps your body working at its best. Plus, bundling up is cozy, so grab that scarf your grandma insists on. It may not keep away colds, but it’ll certainly keep you comfortable.

And when someone tries to tell you, “You’ll catch a cold out there!” feel free to smile and say, “Actually, I’m keeping warm—and I’ve read the science to back it up!”