One out of two people will get one this winter. As you probably know, a cold will give you a stuffy nose. A person with a cold also often has a sore throat and headache and feels tired.
Winter is a big time for colds.
But it's not the cold temperatures of winter that cause colds. Scientists believe that it may actually be the change in temperature that makes people more likely to catch colds in winter. Other scientists say that in winter, people spend more time cooped up indoors. With more people inside together, there are more chances for cold germs to spread. Even if you don't get a cold, you can try an experiment.