Series 10 watch does not measure exercise right

rjsqxxx wrote:

This happens with indoor walk on treadmill. Extremely frustrating that the time is not captured correctly. The other bands blue and red behave reasonably but the green band (exercise) just will not capture time that is anywhere like what I am putting in exercise wise. I am using workout app and selecting indoor walk. Sometimes it works but is a few minutes off. Other times I have to reboot the watch to get it to work right. I am at the latest watch OS 26.

You might want to start with the suggestions here:

Calibrate your Apple Watch for improved Workout and Activity accuracy - Apple Support

For a treadmill, you should have to manually start a workout.