RHR 38 at the moment, normally in the 38-42 when at the desk or sofa surfing. Tracked using my Garmin 810 which I use a lot for stuff like this when on/off the bike, you know just to assess fitness.. And as Ton mentioned it’s the rate of decrease from exercise that counts.
I did have a recent stint in Hospital for a couple of days where they kept me in because they thought I was having a heart attack, simple thing was my heart rates low for my age and they kept me in for observation. No matter how many times I told them I was cycling hard and in training it just didn’t sink in…
Better safe than sorry I guess..