Although I do think I have an above average immune system. Since I haven't been ill, other than headaches, since I was 16. And that was only because I got stung by a sea urchin thingy and got sick from the infection. Last time I had the flue I was 12 or so. And I'm also fairly stress proof. The busier I get, the better I feel.
Maybe getting that disease when I was young boosted my immune system quite rapidly.
I don't know the english word for it, only the dutch. It's called Rode Hond ziekte which literally translates to Red Dog disease.Looked it up, it was german measles. Which usually isn't too bad, but due to being inocculated while having it I got it quite bad myself.)