Well, I abandoned this half way through the first 5 minute run. Calves were just to painful to keep going, and whereas the mental and emotional side of me was game, the physical wasn't!
I'd overslept and more or less went out straight away with only a glass of water beforehand.
My calves do seem to be a big problem. I warm up properly with the 5 minute brisk walk, but almost as soon as I start running, they ache. Once I have done the 5 minute warm down, they stop aching. I wonder if I should do some stretching and leg exercises on the rest-days. Any opinions on that?
I've just bought a second-hand running machine for winter, although I am not using it for this plan as I prefer to run around the beautiful fields right on my doorstep! I could use that in between runs though?