I ran on Wednesday and I think I was going too quick to stop myself getting cold and also because I wanted to get it over with. After 10 minutes at this pace I had a pain under my ribs like a stitch and had to slow down to a walk. In retrospect I probably hadn't eaten enough that day in addition to starting off too fast. This was the first time I'd had a serious problem in the plan so I felt a bit discouraged. Now with the darkness and the cold I'm finding it difficult to go out again but I'll try and repeat this run tonight.