I think it's generally connected with hand movements, however, imagine you are sitting down and watching TV, and every time you lift your hand.. If that count as steps its wrong
Imagine you are sitting down, however doing something with your hand like aggressively or rapidly moving your hand.... Then it's natural for the watch to "thinks" you are moving
At the end of the day, we all have paid so much money for an unintelligent piece of plastic... That's call power of Advertisement 😂