I c ouldnt believe how completely knackered i was after Thursday nights session. I did have both flu jags on Fri as well so prob a combination of a few things. I did struggle around a 7m run Fri evening but have a hamstring strain on the right. I also did the timetrial yesterday in a slow 34,20 and could feel tightness the whol eway in my hamstring. So I will rest a couple of days and ease up to the half next Saturday.
I fact I plan to do some turbotraining as I have the bike all set up.