Because of MrsC's recent (near explosive) BP measuring, we've bought a BP monitor, an Omnicron M7
What fun.
She has BP all over the place - 130/80 sometimes, then 17x/90. But consistent heart rate in the 50s when rested.
My resting heart rate is in the 60s but BP 128/78. Not so good.
The 'teenagers' (ok, they are twenty) . . .
BP okish, but their resting heart rates! 80 -90 bpm. That included the one that goes jogging now and then (but only a few km).
Little MissC, who hasn't had any exercise for a couple of years (but used to cycle a fair bit) had better BP and heart rate than any of them.
So a core basis of getting decently fit pays off, it seems. I always thought so.