This video talks about what is Immunity system? And how to boost it?

Some eatable for a good immune system:- Green tea, Sunflower seeds, Almonds, Dark chocolate,Turmeric, Fish Oil, Broccoli,Sweet potato, Spinach, Ginger, Kiwi, Red bell pepper.
My supplement stack:- Whey Protein Isolate (any brand), vitamin e, vitamin c, vitamin b7, vitamin k