Getting faster with some Fartlek!

Yep, it's that time of the week for some Fartlek! Everybody loves a bit of Fartlek as the efforts are so random and you don't feel as if you are staying to a structured session, unlike timed intervals or those over set distances. Wednesday is my day for Fartlek as we have 6th form games and I therefore have the whole of the school fields to myself.
The plan today was for a nice steady warm up of around 0.5 miles, before hitting out some fast bursts, ranging in distance from 100-400m. It was a fairly good session in beautiful weather. It was simply me and the sun, as well as the volcanic ash dust of course. My knees however felt a little stiff in the first half of efforts, as did my calfs from the efforts on the road on Monday. I may have to contemplate wearing the Grid Tangents (see Kit Cupboard) instead of the F-Lites, as they have more support and cushioning and my legs, which will have got softer over the long rest, may benefit from more support for a while. Anyway, after the slow start, the session got going. The only time I have for you is the last rep, which was between 350 and 400m, and this was completed in 56 seconds, so I'm pretty pleased with that.
Tomorrow I may slip the '4 blocks of 10 minutes session' in depending on how I feel. Doing it tomorrow would give me a nice rest day on Friday, before a big weekend's training. Either way, I feel pretty happy with the way things are going at the moment. All I need now is progress!