Hi
For the purpose of crediting the hourly Stand achievement, your Apple Watch aims to identify when you have stood up and moved around for at least one minute during that hour.
Apple Watch uses an accelerometer to identify movement, so arm movement equivalent to changing from a seated to a standing position followed by a minute's walk around with your arms swinging naturally should help to register this.
If you believe that you have met this requirement, but Stand credits are still not being awarded, it may help to follow these steps, which have previously resolved the same issue for other users:
If you have not yet done so, update your iPhone and Apple Watch to the latest software, starting with your iPhone:
On your iPhone in the Watch app, go to: My Watch > General > Wrist Detection - confirm that this is turned on.
- Note that Wrist Detection can be affected by temporary or permanent skin changes, such as by some wrist tattoos.
- Stand credit will not be awarded unless Wrist Detection is enabled.
If Passcode is enabled, check that you are unlocking your watch each day after placing it on your wrist and that you are wearing your watch sufficiently snugly (neither too tightly nor too loosely).
On your iPhone, in the Watch app, go to: My Watch > Privacy > Motion & Fitness - turn Fitness Tracking off.
Restart both devices by turning both off together, then restarting your iPhone first:
Re-enable Fitness Tracking.