Two students are discussing whether cold weather causes colds.
Jane: I think cold weather causes colds. I always get sick during the winter, but I rarely get sick during the summer. I don’t know the scientific details, but there’s definitely a connection between cold weather and colds!
Tom: Only viruses can cause colds. However, cold viruses spread more easily in low temperatures. Cold weather can also weaken our immune systems. Overall, cold weather does not directly cause colds.