Teacher you like to run?

There's numerous people that don't understand my desire and drive to run in the US.  Now I'm getting the same questions from my students.  Why does it make you happy?  What do you like about it?  What's the point?  Putting my race number and medal above my desk does make the questions more frequent though.  I'm hoping that there will soon be a collage of race numbers above my computer, but one step at a time.