https://pubmed.ncbi.nlm.nih.gov/9316546/
Animals with slower heart rates tend to be longer lived. An interesting sidenote are bats, which have heart rates about the same as similarly sized small mammals like mice, but due to their nightly torpor state where their heart rate is significantly lowered, they tend to live 20-25 years opposed to the 3-4 mice usually live.
If I am regularly running, my resting heart rate at night drops into the upper 30s. During the day sitting down, 45-50.
If I haven't been running (for a week or longer) it picks back up in to the mid 40s at night, and around 60 for normal sitting.
My heart rate when sleeping is 65bpm, and I can't focus on anuthing if my heart rate is below 90bpm during the day.
Some of the most productive people I know eat nothing but donuts and coffee, and don't exercise at all. They're smart, driven, and highly successful.
Meanwhile, I know a lot of people who put exercise and food as a priority, and don't seem nearly as sharp or as successful. Maybe this all washes out, with age.
Point is - do whatever works for you. Don't let some blog, or some person on the internet, tell you how to perform optimally!
Don't ask me how I know :-)
https://www.labroots.com/trending/cell-and-molecular-biology...