Resting HR and HRv are two different things.
I have had a good resting HR - but my monitor told me i was stressed as it works on HRv.
HRv i find tells you once your Body and nervous system is recovered. But it wont tell you if you have Tight muscles. Your nervous system is linked to your CNS which is linked to your HRv. If your nervous system is not recovered, then you wont score a Recovered Rate.
Pioneer, you wouldn’t want to do that Heart rate test during sprints with me, i would be recovered far too quick. Even a fast 200m, my heart rate is lucky to hit 80% of max. Others i know, can hit Max within a 60m burst.
Sady - My current best Rest HR is 42, typically during training days its 46-48. If i woke up with a 60 HR - i better be asking Q’s… and perhaps calling in to see a Dr.