Getting regular exercise

Yesterday I walked home from work. I figured it couldn't take much more than an hour, and it didn't. The view from the top of the hill in Brockwell Park was fantastic, and the feeling of complete calm and serenity I had when I got home was worth spending an hour a day on. Knowing my usual attitude to exercise, this may not happen again in the near future, but who knows? It could be a regular thing.