On Saturday I felt clunky when I ran. Last night I felt like a gazelle, bouncing along, eating up the road. I did one of my regular loops - 8.8km, and felt like I was flying. The strong wind made things a bit tricky in places, but I was sure that I had murdered my PB for that route. Sure enough I did: by 2 seconds. I thought I'd knocked at least a minute off it. I'm finding that it's very hard to tell when you're going fast: whether you feel good or bad is not really a guide. You'd think I'd be getting a feel for it by now.