Part 6/9:
A recent addition to the Apple Watch, notably watch OS 11, is the "training load" feature. This capability—available only on Series 6 and later models—rates your workout intensity on a scale from 1 to 10 by comparing your performance to your 28-day average. Unlike heart rate zone data, training load is reviewed after your workout.
Following a session, you can analyze this data to determine if you should push harder or perhaps dial back a bit. Access this data by clicking on the Move ring, then the graph on the top right. Having weekly averages, you can assess trends in your performance—prompting adjustments to your future workouts.