Winter can take some of the blame, but the cold isn't really the cause of the illnesses around us. The real culprit for catching viruses is a lack of ventilation. Let's discuss one significant obstacle to health every winter - the heating. It's true that it's important to keep the body warm so that it remains healthy and stimulates blood circulation, but don't exaggerate. Any doctor will confirm that there's no need to overheat rooms. On the contrary, ventilating the spaces can reduce the chance of infection.