Cold weather doesn’t literally make you sick, but the winter season does indeed make you more prone to catching a bad cold. Chilly conditions mean you spend more time indoors, where bacteria and viruses are more likely to linger in the air and on surfaces you touch, and the drop in temperature leaves your mucous membranes dry, irritated, and more vulnerable to infection.
The holiday season can be particularly rough on the ol’ immune system, what with all the traveling and hanging out with far-flung relatives and their exotic germs. And let’s be honest, you’re probably not taking the best care of yourself either—drinking, eating lots of unhealthy food, staying up late.
Actually, take a break!
The simplest remedy is also the most effective, and probably the most disappointing. If you had time to rest, dammit, you wouldn’t be Googling around for quick cold remedies.
But listen, friends: you’ve got to get some rest. Really.
If you absolutely must go into the workplace (or to a family gathering for the holidays) bring some hand sanitizer with you. You usually want to avoid killing off the microbes that live on your skin. But if you’re exposing innocent bystanders to your cold or flu, the least you can do is give yourself a good Purell rubdown after any contact between your hands and your mucus-y bits.
More of this at Popular Science