It would be great to be able to choose your activity when creating a challenge. Right now activities are limited to run, bike, steps, swim.
Why not let users challenge on any activity?
I'd love to challenge others in rowing.
I Would also love to make it. But not all data needed is available.
What is availeble is
Timetorecover, activeMinutesWeekGoal, activeMinutesWeek, activeMinutesDay.
trainingEffect history. Maybe via a workaround it's storable but it's only the aerobic fitness not the anaerobic fitness
If that was available it would be possible to make a list of varying difficulty and sports that could be given based on settings and the current training status.