One of the many hurdles I've had to overcome to continue my fitness journey is my weak immune system. Recently at least it seems that I get sick easy, and once I'm sick I'm usually sick for three or four days minimum, most times around a week. I am sick and tired of being sick and tired. It's keeping me from doing what I want to do, and from achieving my goals.
So, I'm going to add in supplements to my regimen. I take a daily multivitamin, and a vitamin D supplement already. I need advice. What supplements, or foods, would you suggest I add to my diet?