Effortless Thanksgiving run, but not in a good way

Today's run (street): 3.6 miles
Yesterday's run (street): 3.2 miles

Happy Thanksgiving! I worked from home yesterday and have been feeling the holiday spirit since wrapping up work on Wednesday afternoon. SIOR is shaming encouraging everyone to do the Thanksgiving to New Year's streak that involves running at least a mile every day. So far, I'm good. I even ran yesterday, and I'm wondering if I can apply that to a day during the streak when I can't run.

Yesterday's run was fairly textbook. Usual route, usual pace. I'm hard pressed to recall anything interesting about it except that the roads were almost completely free of cars. Neighborhood running is much better when schools are out. No buses or parents doing drop offs. I enjoyed having the streets to myself.

During that run, my heart rate was hovering around 75% of max, which did not match my harder perceived effort. I found it interesting that I matched my usual pace with a 6% lower heart rate. Is that an indicator of improved fitness? If so, then why did it feel so challenging?

If you look carefully, today's route resembles a turkey

This morning I went out fairly early when the real feel temperature was 31°. I wore two top layers and track pants. At the last minute I added a fleece vest. That helped a lot, because running directly into the wind was pretty unpleasant. I originally thought about going to the track this morning but decided that a Thanksgiving run should happen closer to home. I chose a different route than normal and looked forward to another traffic free experience.

Like Wednesday, my perceived effort on today's run was greater than my actual heart rate indicated. I was puzzled to see that the Garmin showed my HR at around 71% of max. I felt like I was working a lot harder than that, closer to 80% range. By the time I finished, I'd managed to push it to 79%. My pace confirmed the data and I saw that I ran 50 seconds per mile slower than yesterday.

I'm not sure why my running is feeling a little tough right now. Last night we went out to dinner and saw a good friend. It was a big meal and maybe that bogged me down a bit this morning. If that's all it takes, tomorrow should be more of the same. We had quite the Thanksgiving feast today, put together with the team of Mrs ER and ER daughter. Feeling sleepy now, but I'm sure I'll get my second wind soon.