Being cold doesn't literally lead you to catch a cold, but being cold can make you weaker for you to get sick. You generally take more time indoors during the cold seasons, which can translate to additional time spreading one another's germs. There's evidence that supports another factors at play, however.

Though most studies, such as this one published within the journal Family Practice, and conducted by Ronald Eccles -- the director of pai you guo tea the Common Cold Centre -- find very little relation between people being cold and developing cold symptoms, others have found indirect evidence to how the cold affects us. In this study published in the journal Pathogens, researchers Anice C. Lowen and Peter Palese discovered that air temperature and humidity levels can enjoy a component in transmitting viruses. Keeping your room above 20C and at intermediate or high humidity might help keep the flu from spreading.

In another study on the Common Cold Centre, Ron Eccles shows that lower body temperatures may cause arteries in your airways to constrict, possibly inhibiting your immune response while onsetting common cold symptoms. So, does the cold make you sick? No, but being cold may produce the ideal conditions for infection.

You Lose Most Of Your Body Heat Through Your Head: Mostly False

This one develops from a various places. Before heating was available, homes could be pretty cold at night. To keep warm, people would wear nightcaps, just like you see in old cartoons. It made sense, considering that your face is among the only things protruding of the covers. This eventually led individuals to think that a lot of heat would avoid your head without one.

Research conducted within the '50s may also have led to this belief. Anahad O'Connor in the Ny Times spoke about the study with Dr. Daniel I. Sessler, an anesthesiologist and expert on hypothermia at the University of Louisville school of medicine:

In those studies, he explained, researchers dressed subjects in Arctic survival suits and exposed these to frigid conditions. But the suits only covered the topics from the neck down, he said, so naturally many of their body heat escaped through their heads. That isn't a fair comparison, Dr. Sessler said. Should you did the same experiment with someone wearing a swimsuit, only about 10 per cent of the heat loss would come from the head.
Dr Sessler explains the body areas of the face area, head and upper chest are te chino simply more responsive to temperature changes than other locations. It could feel like wearing a hat makes you warmer, but the the truth is adding any extra clothing to a different part of the body will reduce as much heat loss.