Cardiology Questions? Ask a Cardiologist for Answers ASAP.
Thanks for this question
This is not concerning at all
you are fine
The book says 60-100 is normal but there are outliers that are normal
especially those people that are active and have a higher cardiovascular fitness
I am a runner and my RHR is about 50 bpm
Yes, it can drop like this
especially during sleeping hours
I would imagine that sleeping correlates to when this happened.
you would need to know when exactly it dropped to 30. probably sleeping
And I am not sure we can rely on this as 100% accurate flawless data
I would get a holter monitor from your doctor if you are worried
I am not though