Do you get a seasonal cold? One in the spring and one in the Fall? You may be suffering from allergies. In the spring and the fall there are so many allergens in the air from the pollens to the molds. These allergens can attack an unsuspecting person and make them feel like they are coming down with a cold when actually it's your immune response reacting to the allergens. Most Americans eat far too many grains, sugar and dairy all of which are considered an acid forming food.
Realizing that I am not the most technical person I won't bore you with the details. In a nut shell, your body becomes overloaded with jobs...