Week 5 run 1, and having been very kind to my sore shins, I was back in the saddle today. Well, back in my trainers anyway. Breathing is fine. Don't feel tired at all. But I have very, very tight calves this week (no pain in shins) and I had to go really slowly. I tore my left calf muscle a few years ago haring down the corridor at work to an emergency and that's where the tightness was the worst. So I went so slowly that I was overtaken by a gardener with a wheelbarrow! Will rest until Friday now to give my legs a proper rest but it's SO annoying when one bit of your body says "run like the wind!" while another bit says "no, you mustn't!"