When I am running intervals using Run mode with interval set, I use the screen that tells me how many minutes/seconds there are left of the interval and breaks. This screen also shows speed and distance.
I would really like to change the distance field on this screen with HR Max percentage instead. For me, it is more helpful to see my heart rate percentage than distance.
The issue is that I can find no way to change the data fields on the special interval page. I can change the data fields in the other data screens - but there seems to be no way of changing the data fields in the interval screen.
Any ideas?