That was my response. My resting heart rate is low to mid 40s. Perhaps there was something on the EKG besides the low rate although that is all the nurse told me when giving me the referral to the cardiologist.
I’m 62 and my RHR has always been in the low to mid 40s. Most doctors are fine when I explain I’m a cyclist. However, once before a colonoscopy I was told they wanted my hr above 50 before giving me anesthesia. They cave me something to raise my hr viburnum it only went up to about 48 so they gave up and did the test anyway.
I’m 32-35 most mornings, 40 years old. No issues due to it.
My supine resting was in the low 40’s until an interruption in training for travel, followed by Covid. Currently in the low 50’s
If you regularly exercise and have no other symptoms then it’s likely nothing to worry about. I’m 56 now and have about 20 years of resting heart rate data. My norm is low to mid 40s (sitting resting HR). I have Covid at the moment and it hit 52 bpm yesterday morning, but back down to 46 bpm this morning.
I measure my resting HR with HRV on a daily basis. Good to have that history if you ever need to visit hospital or GP.
I think normal population resting HR is stated as 50-100 bpm for UK. If my resting heart rate is anywhere over 60 bpm something is seriously wrong.
My overnight HR averages 33bpm or so. Lowest I’ve recorded is 28bpm. I find the Apple Watch really struggles to discern beats that slow, so I have been sleeping with a chest strap to see how low I actually go.