I ran a 10k race last week. It was a really hot day but I did OK. Up till that point I had been running 10k three times a week with a shorter club run as well. I felt the fittest I had been in ages.
SInce then I had just totally lost my mojo. I ran 10k on friday but it nearly killed me and managed a 5k in about 45 mins this morning.
I am struggling to work out why - the only thing I can come up with is that I have a tooth abcess that I can't get treated until next week. I had been taking loads of ibuprofen and paracetamol but it seemed to suddenly eased this week and now it just aches a bit. I know when you get a cold it can make you slower but would an infection of this kind have this effect?