Does it miss giving your credit for standing on any of those hours it does not remind you.
In reality all the Apple Watch cares about is whether or not you have moved your Apple Watch arm in a motion where it thinks you are swinging your arms while walking. It does not actually know if you are vertical, standing on your head, or laying down or sitting. People that knit get tremendous step counts just working the knitting needles.
If you are getting stand credits but you still want to stand every hour, then get an iPhone app such as "Alarmed" from Yoctoville software, and setup a repeating alarm that tells you to stand. It will not care if you have waved your arm or not, it will just alert you at a specific time.
Alarmed alerts will appear on your Apple Watch.
You would set up the stand reminder to go off every hour with a "DayMinder" event, and because you know you will ignore the first few, you can set a Nag-Me for each DayMinder even so it will repeat until you dismiss it.
I find "Alarmed" to be a very versatile alarm app for everyday use. Far more useful to me than a Calendar or the Apple Reminders for repeating events. It also has a nice set of timers, which you can customize, and you can Geolocation alerts, so if you want to remember to pickup some milk on the way home, you can place a Geolocation alert around the grocery store you pass on your way home.
