My rhr is usually around 80. I should do more cardio. Mine is higher than yours even when I'm sleeping. Do you do a lot of running or something?
I see people with good BP and RHR's in the 80-100 plus range and they also take stims which increase it more. On a long term level, I don't think this is not great but the average RHR is 60-100. Our GP, after years of no doc, is over 60 and old school. My better half has a resting HR of 80 and a higher diastolic number in the 70-90 range. He wanted to put her on beta blockers, and a diuretic. I asked her to ask him about a trial of quality fish oil and black seed oil and he didn't recommend either so she picked up the meds and didn't take either as she was getting retested in 2 weeks once on the meds. She is only 115 lbs so 500 mg once a day of Nigella Sativa and 1500 mg combined of DHA and EPA from Carleson's, and up the BSO twice a day if needed. After a few weeks, her RHR dropped to 70 consistently and her diastolic is around the same all the time. She does more cardio than I do. Never had to take the meds and told the doctor, he said to keep doing what she was doing.
No, I don't do a lot of running or any cardio at the gym but my diet is healthy - full of healthy fats - nuts, seeds, fish, fish oil, berries, vegetables and fruit, full of anti-inflammatory foods like pineapple and raw ginger, don't eat sugar or any boxed food, try to get a variety of protein sources from plant and animal.
Long story short - I will never be seen on a machine doing cardio or running. I walk my dogs and spend hours training my pack weekly. The latter is not cardio but it is work training protection.
Other than that, I have a heavy bag, and BOB and spar for fun - if no injuries, I make sure I spent 30 min twice a week doing one of three. I don't do it as much as I would like to due to work being so demanding. My business is not physical in the least.
If you look back at the log my RHR was in the 70's and is now high 40's when not drinking coffee but most often I take it in the morning when guzzling coffee and it is in the low 50's. I suspect more diet, few supplement related than cardio.
Apologies for the long response but it isn't a one line response or I could just say, no I don't run or bike like periods lol.