I bought new sneakers (Ryka, by Kelly Ripa -- side note, they are black and I've always wanted dark colored sneakers) and tested them (and myself) on a mile run this morning. It was glorious! Shins feel amazing. Body feels amazing. The only thing is a potential blister on my left heel -- since it was there immediately when I started walking this morning, I think it's from my boots last night, not these sneakers.
I'm going to do a mile a few times a week, based on my work schedule. It feels good to be back. :)