Walked around 1/2 mile round the local park. It nearly killed me. The cold wind made my eyes water, and I couldn't get them to focus properly. On top of that, half way round my right calf and ankle started complaining, so I had to stop a couple of times, and slow down my walking as well. I do want to continue with the walks though, as otherwise I don't do any exercise at all. Other than lifting my coffee cup that is.