Apple Watch Fitness app move ring calorie count decreases on the same day
I have an Apple Watch series 11 bought in January so relatively new. Twice this week the number presented in the move ring within the Fitness app has gone down on the same day. For example, today at 11:20 the calorie count was 530 of 680 on the move ring. Then at 1552 (3:52PM) the calorie count showed 495 of 680 what is causing this to happen?
The watch is current on its operating system