When exercising, its important to know what your heartrate is. The Inspire HR measures heartrate pretty well, and logs it, but to get a reading you have to swipe up then try to see the very dim display (often impossible outside). However, the ring around the heart icon does convey what band (Fatburn, Cardio, etc) you are in - if you can read it.
Given that the Inspire HR provides good haptic feedback for many events (goals, texts, calls, appointments, etc) its kind of surprising that it doesnt give you info on heartrate band when it knows you are exercising.
So I guess this is a new feature request:
1) Provide a setting to give periodic info on heartrate band during exercise only.
2) Suggest 2 haptic pulses every 15 secs if you are in Fatburn, 3 if in Cardio, and 4 if in Peak.
Suggestions for better ideas / refinement welcome....
