Be careful 大圍兄, this is the 1st sign of burn out. Back off the mileage and you will be fine. The training distance isn't black and white written in the book. If you feel tiring, just skip it. ...
lv ching:
Thanks for your advice and I will try to tune myself. First step I have done was to forget about the mileage for the coming month and just to enjoy the racing and training.