Your resting heart rate is a window into your autonomic nervous system.

Trajectory and context matter more than the number.

48 in a trained endurance athlete = excellent reserve.

48 in a sedentary 65 yo man = possible conduction disease.

72 that drops to 58 after three months of consistent training = meaningful adaptation.

The number alone tells you nothing. The trajectory tells you everything.

What's your resting HR doing? Going up, going down or have you never tracked it?