Apple watch - Move & Stand glitch

Hi all

I am having a problem with my Apple Watch SE registering my Move and Stand activity. The Move ring is not registering active calories properly - after a 3hr 10km hike my watch registered 142cal compared to my partners 1,135cal. The Stand ring registers every hour, even when I am doing nothing and sleeping - for example my watch says I hit my stand goal 23 times yesterday!

I’ve tried restarting Watch and iPhone. I’ve checked both are running latest software (watchOS 8.5.1 and iOS 15.4.1). I’ve unpaired and re-paired my devices. I’ve recalibrated fitness data on my watch. Any other suggestions?

Thanks in advance!