Hi D1kUK,
Thank you for contacting Apple Support Communities. Based on what you stated, it seems like you want to know what is recognized as exercise so it can be recorded. I would recommend you use this article, it explains how to earn exercise credit.
Every full minute of movement that equals or exceeds the intensity of a brisk walk counts toward your daily Exercise and Move goals. For wheelchair users, this is measured in brisk pushes. Any activity below this level counts only toward your daily Move goal.
To make sure that you earn Exercise credit during walks, allow the arm with your Apple Watch to swing naturally. For example, while walking your pet, let the arm with your watch swing freely while the other holds the leash.
If you need both hands while walking, for example to push a stroller, you can still earn Exercise credit with the Workout app. Open the app on your Apple Watch and tap Outdoor Walk. The Activity app relies on arm motion and an accelerometer to track movement, but the Workout app can use the accelerometer, the heart rate sensor, and GPS.
Get the most accurate measurements using your Apple Watch
Cheers.