Press the Digital Crown on the side of your Apple Watch. Select Settings (the cog icon) from the list of apps. Scroll down and select Activity. Switch off the toggle next to Stand Reminders.
Stand may be a slight misnomer. You have to move your wrist wearing the watch as well. In fact, I have found out that is more important than actually standing. If you stand perfectly still, as you point out, it will not reregister.
The inner Apple Watch ring, the blue ring, is your Stand ring. Your Stand ring shows how many hours of the day you stood for at least one minute, with the goal of moving in at least 12 different hours.
Stand. The Stand ring shows hours in which you've stood and moved for at least a minute. Complete your daily Stand goal by standing up and moving around for at least 1 minute during 12 different hours in the day. Even if you stand all day, you still need to move around to earn credit for standing.
The Stand alert will pop up on your watch at 10 minutes before the top of every hour, if Apple Watch senses you've been inactive for 50 minutes. There are times when you don't have a moment to walk around for a minute while standing—so how can you register a Stand goal for each hour?
Apple Watch SE stands for Apple Watch Special Edition similar to the iPhone SE. The Apple Watch SE comes in two sizes and two connectivity options.
How to change your Apple Watch's activity goals
Disable Stand Reminders on Apple Watch
In that case, you can turn them off like so.
The Stand ring However, every hour that you stand is an additional 8 points. If you stand for sixteen hours (every hour that you're awake) you'll earn 128 points each day, or 896 points per week.
One way to 'hack' the Stand ring is by standing up and then swinging both arms front to back about 15-20 times. By doing this, your Stand goal for each hour will close every single time. It can also help loosen up your shoulders and relieve tension in your arms if you work at a computer all day.
How to Change Stand Hours and Exercise Minutes Apple Watch Activity Goals
How to change the Activity goal on Apple Watch