Starting Monday morning, my watch completely changed the amount of "exercise" it records in the Activity app. It is still recording movement accurately and completely, but the amount of exercise has changed dramatically - it basically isn't recording exercise minutes any more, even when the movement and heart rate are the same as earlier workouts. I've spent ~ four hours with five Apple support techs, including two senior advisers. No one has any suggestions, other than the possibility of a silent update to the algorithms for counting "exercise" in the Activity app. Since the change happened on Monday and I've been on WatchOS 5.2.1 since it was pushed out in mid-May, it can't be a change from 5.2 to 5.2.1. Has anyone else noticed a recent change in how "exercise" is report in the Activity app?