Mama said there'd be days like this (Read 301 times)

It happens. 

+1 I think that's the general theme of this thread. I also had an awful, worst ever run during my current training cycle. Hot and humid day for a long run (15 miles) that felt terrible. HR spiked over 200 and I tried going veerrry slow, but HR still up over 160. Didn't know if it was due to the heat or to physical fatigue, but went out and did a 9-mile aerobic run the next day with no pain. Sometimes it's the next day's run that tells you what is going on -- whether it's just a bad day or a sign that you need more recovery.