A tougher stretch than early season.
Fitness = 42-day load average (CTL) · Fatigue = 7-day (ATL) · Form = Fitness - Fatigue (TSB).
Reading: Threshold pace is 10s/km faster than the first reading.
The effort you can hold before lactate builds up, as the watch measures it. Garmin revises it every few weeks, so the line steps rather than drifts.
Reading: Maintaining dominates this window (50% of rated days), currently reading "Productive".
The watch's daily verdict, with the acute and chronic load Firstbeat measured. The blue band is the chronic load range Garmin personalises for you.