Okay, I don’t literally write while walking. I’m fairly certain I’d bump into something if I tried doing that. (I’m also pretty good at bumping into things anyway).
I’ve found, though, that sometimes doing non-writing related activities—cleaning, showering, walking—helps me figure out where to go with a story or character when I do sit down to write. While I probably don’t need to do much more showering, doing a bit more walking or other exercise might not hurt, and I hear it has benefits that are unrelated to writing.
Oh, and as a follow up to last week’s post, I’ve found a more apt analogy than the 10,000 hours one for writers: the million words.