Yes, we said it.  Avoid Sugar.  If you feel like you might be coming down with something or if you are already sick, the ONLY sugar you should have is Honey (a natural antibiotic).

While bacterial and viral infections are not directly caused by consuming sugar, sugar does make your body a more hospitable environment to these microscopic squatters. Studies show that sugar increases inflammation in the body and suppresses the immune system.  Your germ-fighting white blood cells will be focused on the inflammation, leaving your immune system defenseless against any loitering bacteria or cold virus.