Fitness app not tracking exercise data + Health app not recording heart rate/oxygen averages

Hi everyone,

I’m having some issues with my iPhone and Apple Watch and was wondering if anyone has experienced something similar or knows a fix.

1. In the Fitness app, exercise data has stopped recording. The green ring always stays at 0 and never closes, even though the other rings (Move and Stand) are tracked correctly.
2. In the Health app, under the main metrics section, the average values for heart rate and blood oxygen are not being recorded.

My setup:

• iPhone 13 Pro Max
• Apple Watch Series 7
• iOS 18.6.2, watchOS 11.6.1 (22U90)

What I’ve tried so far: restarting both devices, checking app permissions, and installing the latest updates — but unfortunately, none of that helped.

Has anyone faced this issue? Any advice or troubleshooting tips would be greatly appreciated.

Thanks in advance!