Heart rate zones sound like a tool reserved for competitive athletes, but they give any member training with a wearable a much clearer, more objective sense of effort than perceived exertion alone.
Lower zones build a base, higher zones build capacity
Extended time in a moderate zone builds aerobic base, while shorter efforts in a higher zone build cardiovascular capacity — a mixed approach across a week trains both effectively.
It's a tool, not a rule members need to obsess over
Zone training adds useful structure for a member who wants it, but it shouldn't become a source of anxiety over hitting an exact number every single session.