I'm determined to keep track of how each run goes (otherwise I might be tempted to stop, or think I can't do it after a hard week) so here's today: I did the second run of week 4 this morning (such a beautiful day!) and although it wasn't easy, I think knowing that I had already done it (including both lots of 5 minutes) really helped. No idea how I'll run further though!
edit: I accidentally wrote W2R2- happily I'm past that one