How can I see all my heartzone time for a period or for all my events?
Ex:
Since 01/01/2020 (to be set)
Z1= 50h
Z2= 10h
and so on ....
It will be very intersteing for figure out training and fallow the right balancing between endurance/HIIT (polarization method by example)
Anyway, it's possible to have an interface that allows us to compute data as we want ?