Healthy sick is the new skinny fat

When I was in high school my friends and I used the term "skinny fat" to describe someone who was slim but had low muscle tone.  Like, yes they are thin but not exactly "fit".  Another little opposite trend I have been picking up on is the "healthy sick".  The ones who are vegan and hypoallergenic and paraben free but always seem to have a sinus infection.

My sister Megan is the healthiest person on the planet.  She is an Ayurvedic practitioner.  She drinks chai seeds.  She eats raw garlic and ginger.  And yet she gets sick.  A lot.  What is up with that?  I have been sick maybe three times since my eight year old was born.  And I don't really take care of myself.  So my question is how can someone like me stay relatively healthy* while someone like Megan gets every virus that is scooting around Santa Monica?

Love,
Kristen

*Now let's all knock on something resembling** wood because on top of being a hypochondriac I am also superstitious.  I might as well get my z-pak script filled right now.

** I am not remotely Type A or I would have asked that you only knock on actual wood.