I've been away since Wednesday evening, so I thought I ought to post an update now I'm home. I've spent the last 4 days at Donington Park for a race meeting, so I took the opportunity to do my first two runs of Week 5 on the track after the racing had finished. The first run was tough as I hadn't appreciated how hilly the first bit of the track is, but I managed it even with the hills (it was the first time I'd attempted running up hill). The second run was much better as I decided to go the wrong way round the track, which was less hilly. The second 8 minute run was down the slightly downhill straight I managed that one with no problem at all.
The only problem I have now is I'm getting quite a bit of lower back pain after running. I've always had occasional lower back pain as I have a really arched hollow, but it's been really bad these last few days. I'm going to see an osteopath tomorrow to see if they can sort it out. I'm worried they're going to tell me I can't run for a while and set me back! Does anyone else get this?