[ RUN ]- request notifications and HRM

Notifications function is really useful but i would like to request to add HRM because its no t only useful but even safer ;)

At least i think the "Max HR (beats/min)" should be added, but I am not sure about the need of defining a notification for "Min HR" as it can produce more "false" notifications.

Feedback for UX
First time i used notification settings, after replacing "off" by a "distance" I expected this notification working, but it didn't as I haven't defined a pattern; but also I didn't know what a "pattern" was meant.

About prefixed distances, i can understand 1km, 1mile, 5km,10,.....
But i don't understand the use case of long measures associated to competitions; 1/2marathon or marathon.
Is the target to detect when to stop during a training for a marathon? be notified during a ultramarathon?