Yesterday afternoon I did the next run on my training schedule, which was a tempo run. I ran for 10 min at 5.8 mph, then did 2 x 10 min at 6.5 mph, alternating with 2 x 2 min at 5.8 mph. Then I finished with 5 min at 5.8 mph. This took 39:00 and totaled 4.0 mi. This felt like a hard run, and I don't think it was just the speed. I think the boxing earlier in the day cooked my legs a bit.
This morning I was back to normal with my regular Sunday boxing class, albeit at an earlier time than usual. It was good to see the instructor again, who had noticed I'd missed a few weeks. I dogged the c lass a bit, as I was tired.