Ode to piriformis

Dear Piriformis,

First of all, my deepest gratitude for connecting my leg to my spine. Seriously. 

I had no idea how big of a deal you were, though I'd heard rumors. When you are happy, I am happy. When you are tight and upset, you impinge on my sciatic nerve, and then I am sad. I promise to do everything possible to keep you moving and groovin'. 

You are such a teeny muscle, really, only the length of my thumb. But somehow, you can control my whole leg. Incredible. Thanks for being awesome. 

Love,

Ellen