I had a wedding to go to last night, so we were back late and in bed late. I had plenty of sleep, and I did not overindulge in any way, but I do not feel the track workout today. At all.
The key to knowing when to back off is journaling your workouts. If your body is telling you not to get your work in, then you should listen. If your journal tells you this happens more than once every six weeks or so, in my experience, one of two things is going on. One, you are over-trained, or over-training, and you need to back off the intensity or the volume, maybe both. Or, two, you are losing your mental edge, and you need to have a talk with yourself to see if you are really able to commit to the path you are on. Either commit or change.
I’m not worried about missing this work. I’ve only bailed twice since June on scheduled work. I wish I were younger, and I wish I were faster and stronger, but then I would not know what I know now—I can do just fine tomorrow.