Now it's a bit less freezing outside, I have resumed my very-fast-night-walks. (I refuse to 'run' unless I'm being chased but I do enjoy very fast walking for exercise.) And I go at night because that's when I have time. Anyway, I have been cranking 80s Kate Bush on the ipod for a while now and to mix things up, I've found Volcano Choir makes great fast-walking music. I love this song especially.
Have a great weekend.