Incorrect again.
Brisk Walking Means Moderate Intensity Exercise
Brisk walking actually refers to your exertion. For your walking pace to be brisk, you need to be breathing harder than usual. While you should still be able to speak in full sentences, you shouldn't be able to sing.
The moderate intensity zone is defined by the CDC as being from 50% to 70% of their
maximum heart rate.
This varies by age. The best way to measure exertion is by pulse rate or heart rate and using a
target heart rate calculator to see whether you are in a moderate intensity zone for your age.
https://www.verywell.com/how-fast-is-brisk-walking-3436887
Read my edit. I proved all this as not necessary in how the Apple Watch counts exercise. Apple Watch ONLY uses the heart rate monitor when a workout is running. So by your logic, it would NEVER give exercise minutes unless a workout was running. Therefore your entire individual stats is 100% incorrect in how the Apple Watch counts exercise credit.
When a workout is NOT running, it has to rely on speed/pace of a brisk walk. NOTHING else. Because there is nothing else to check.
EDIT:
We've been down this road before so I will just start posting my old posts:
#49
"Every full minute of movement that equals or exceeds the intensity of a brisk walk counts toward your daily Exercise and
Move goals. For wheelchair users, this is measured in brisk pushes. Any activity below this level counts only toward your daily Move goal.
Make sure that you earn Exercise credit during walks by allowing the arm with your Apple Watch to swing naturally. For example, while walking your pet, let the arm with your watch swing freely while the other holds the leash.
If you need both hands while walking, for example to push a stroller, you can still earn Exercise credit by using the
Workout app.
The Activity app relies on arm motion and an accelerometer to track movement, but the Workout app can use the accelerometer, a heart rate sensor, and the GPS on your iPhone if you carry it with you. Open the Workout app on your Apple Watch, tap Outdoor Walk, and bring your iPhone on the walk."
https://support.apple.com/en-us/HT204517
So AGAIN. NON-workouts, use accelerometer to track your speed and pace.
NOT heart rate. Therefore there
MUST be a minimum speed. Apple has said its 3MPH. Believe it or not.
I will end with this as I need to study for finals. Take it or leave it, but Apple has made it very clear.
Watch. There maximum anaerobic effort is only about 3mph. So their aerobic effort would be well below an absolute 3mph threshold, making it arbitrary. They would probably receive Exercise credit (and an aerobic workout) below 2mph.