A.M. Did my 5 mile tempo on the Fast Running Blog course after a 2 mile warmup. It started well, but deteriorated after two miles. The splits were 5:36 - 5:40 - 5:49 - 5:48 - 5:51 - total time 28:44, 8 seconds faster than last week, in spite of the positive split. I felt strong in the first 2 miles, but then the legs were tired and had no zip. HR refused to rise above 160, and preferred 156 with a slower pace as a consequence. So I finished the tempo, jogged home, (11 miles at that point), ate some dates and waited for them to assimilate while I did some computer work. Then I ran with the kids. 2 with Jenny and Julia, 1 with Joseph, 0.5 with Jacob, and 3 with Benjamin. In the last 1.5 I did 2x400 - 73.4 rolling and 70.9 down. Benjamin kept up with me on both. Due to the fatigue earlier I cut the long run to 17.5 total to be on the safe side and also as an experiment to see how I would feel on Tuesday.
I have always thought that cardio weakness would only manifest itself by HR going through the roof, but something is making me wonder if it could also manifest itself by HR refusing to go above a certain threshold. After all, tired legs do that - your leg turnover goes down along with your stride length when you are tired. So I went to Good Earth and got some hawthorn berry pills just in case as well.