I walk ALOTT, not for the exercise purpose but simply because I have no choice in the matter. Tomorrow for example, I'm walking to work as I have no lift and it's a good hour walk! I enjoy the walk on the sly though, and I've started walking to-and-from college which takes me about half an hour each way, it's fun getting exercise even if it's only walking~
I used to love doing fitness in PE at highschool, I miss that. I miss running aswell.