3. Vulnerability to Seasonal Bugs
Winter is cold and flu season no matter what you do, but living in a cold home actually increases your risk of succumbing to a virus. How can this be? A 2007 study that looked at this question found that the answer lies in the way our immune systems produce mucus!
In temperatures above 64 degrees, mucus flows through the sinuses to capture and clear away germs. But when you spend a long time in cold, dry conditions, your body may struggle to produce enough mucus. That means that this important immune response is less able to protect you from airborne viruses, which already thrive in cooler conditions.