Wabash Cannonball - Long Loop

OK.

So, having few rides in during the past 30 days due in part to seasonal changes, i.e., less daylight and colder temps, I decided to just take a fast ride around the block as it were.

OK, now for the truth.

I was so discussed with the previous ride's attempt to push the envelope with faster HR SS intervals that I felt like a slug or damaged goods and should just stick with what I know; the Wabash Cannonball - Long Loop.

That said, I push hard through each section recording the usual average lap speeds as follows: 17.0 / 18.1 / 16.8 / 17.0 mph.

Surprisingly, this was my second best time for this route; the previous best of Aug. 13th may have had an easterly wind advantage.

Curiously, is the average HR of 152 bpm versus 142 bpm for the same previous ride, Aug. 13th as is the average speed of 17.1 versus 17.6 mph and a faster cadence, 85 versus 83 bpm.

So am I to conclude that the fewer rides of late has hurt my efforts till now? What is the reason for a 10 bpm faster HR? Was I less hydrated?

MXS: 24.8 mph.

Weather Conditions: Clear and cool. Light wind around 3.5 to 4.6 mph mostly from the ESE.
Min: 54 Avg: 60 Max: 63 ºF