I suppose I may be reasonably fit. My mother has one of those fit bits and hers is around 60-65 all the time when resting, so maybe something lower isn't too bad for someone half her age?!
The other thing I do, is when I measure my pulse I hold my breath - not intentionally, just a habit. And that apparently slows down heart rate.
My issue right now is that I'm feeling slightly anxious, but my resting heart rate is around 65-75, so if I'm completely relaxed it could be abnormally slow!!
Oh sigh, I don't know whether or not to ring my GP for advice, but they know about my HA and the fact I had heart tests last year so will probably just tell me it's all normal.
P.S. Speaking of cocker I need to reply in my dog thread.