Fluids keep your body from getting dehydrated, which can lead to sickness. Get plenty of vitamin C. Vitamin C helps to improve your immune system against colds and the flu. Get plenty of sleep. Lack of sleep weakens your body and makes it more susceptible to the ravages of germs. Wash your hands often.
More people have colds in the wintertime, and therefore spread more germs.
The more you wash your hands, the less likely you are to contract someone else s germs from a doorknob, TV controller or stairway handrail. Lengthy bouts of symptoms may mean something more serious than just the common cold or flu. Consider getting a flu shot this winter. Many campuses offer discounted or even free flu shots to students. However, be sure to check with your doctor before getting a shot.