Had a horrible day today, was interval training but legs were really stiff and I just couldn't run at speed however hard I pushed. Normally I get my HR up to 175 with 182 or so on my last interval where I push all out for the fastest lap. My legs would t push me fast at all and my Hr was more 167, 173 on last lap. Times were all 10-12aeconds a lap slower, and it was really tough to get the 5 laps in.
Then when the interval training is over I normally go for 5 miles at race race but couldn't maintain that speed at all, which is fine, but despite a modest speed my HR now shot up to 175 and wouldn't go down much. It just got harder and harder to run and I had to walk a few hills at the end which I normally power through.
I guess my easy run yesterday wasn't easy enough but it was the same distance and speed as last week. Or just cumulative fatigues, last week was my longest week at 60 miles with 17.3 mile LR, although I have only been increasing weekly millage by 1-2miles a week.
Disappointing because most of. Y running is done at a slow pace and that can be frustrating when I run so much slower than my intended race pace. My interval days typvially get me 11 miles at a much faster speed than race pace so they normally fill me with optimism.