Up to now my Apple Watch Ultra has been accurate with my fitness data. However today it shows every hour as active and 948 exercise minutes when in reality it is more like 200. The move calories seem ok.
Apple Watch Ultra, watchOS 10
If a force restart does not solve the issue, unpairing and pairing the watch again to your iPhone would be the next step:
Force restart iPhone - Apple Support
If a force restart does not solve the issue, unpairing and pairing the watch again to your iPhone would be the next step:
Force restart iPhone - Apple Support
Apple Watch showing way more fitness data than reality
