The Kenyan

After the run Sunday just got sicker, same on Monday, bit better today. Got down to training tonight and just struggled. Did Kenyan Fartlek, 2 minutes hard 2 minutes easy, only did 5 and was done in. It was slow as well, must be still fairly sick. Around 7km all up. Dad seems to think I am overtraining and I have a sneaking suspicion he's right. Easy runs are definitely too fast and I don't seem to be doing enough of them. What do you think?