Exercise Minutes do not match Workout Minutes
Apple Watch Series 3, iOS 11.2.6
You have to walk at "more than a brisk pace" for it to count toward exercise. See number 2 in the link.
Get the most accurate measurements using your Apple Watch - Apple Support
You have to walk at "more than a brisk pace" for it to count toward exercise. See number 2 in the link.
Get the most accurate measurements using your Apple Watch - Apple Support
Exercise Minutes do not match Workout Minutes