Long Aerobic Row (55 Minutes)
George, thank you for reposting the split data. Looking closely at it, my interpretation changes slightly from my first impression.
This was still an excellent session, but the most important story isn't the pace.
It's the appearance of your first meaningful fatigue signal in several weeks.
And that's actually useful information.
Overall Assessment
Session Result:
Very Successful Aerobic Stress Test
This session tells us two things:
The aerobic engine is stronger than it was four weeks ago.
The workload is now becoming substantial enough to generate a real training stimulus.
That's a healthy place to be.