Thanks to all those who gave me advice, I went out on a session this morning with improved posture. I kept my head up and concentrated on keeping my tum muscles as tight as I could as I went along. I didn't slam my feet down and my breathing is gradually improving. I did the 5 mins walk and then thought I'd run as far as I could and managed 14 minutes before I had to walk. I'm so chuffed! I couldn't have done it without you all, so a BIG thank you. Rest day tomorrow and then a run over the weekend.