Attention: Weekend Runners in Central Park

Why does that lady run around the park with light green face paint on? Is it to protect her skin from the sun…or is it some kind of hydrating facial mask? I have seen her for years and the curiosity has finally gotten the best of me. Does anyone have any idea?

Oh yeah!....and does anyone else find the supposedly "easy" way harder to run (clockwise) than the "harder" way (counter clockwise)?? Just wondering....