A cold virus enters your body through your mouth or nose. A cold is contagious for as long as symptoms last. Colds begin slowly. The first symptom may be a sore throat or a headache, followed by sneezing and a runny nose. A mild cough can develop later.
Temperature is usually normal or only slightly higher than normal.
A cold usually lasts from two to seven days and has few complications. You can t prevent a cold, but you can lower your chances of getting one by common-sense measures. Exercise regularly, eat a healthy, balanced diet, get plenty of sleep, and try to cut down on stress in your life. In this way, you can keep your immune system fighting fit all year long. Wash your hands frequently.