Assuming this is true, I recommend everyone start running!

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.

(Assuming you're not joking) You don't seem to be counting all the extra times your heart beats when you're actually running.

Welp... guess I'll die young.

My heart rate when sleeping is 65bpm, and I can't focus on anuthing if my heart rate is below 90bpm during the day.

For what it's worth - I'm a firm believer that what is always healthy for your body, is not always healthy for your mind.

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!

I did see a cardiologist after COVID-19, he did prescribe some medicine to "calm my heart down a bit", I don't meet actual criteria for tachycardia and he agree in the end that I can postpone medicine if I start any aerobic exercise -- which I still didn't, except for VR games, which can be really intense, but alas, I don't have the time for or discipline.

You heart might survive, but your joints probably won't. The stress you put on them when running/sporting when young will come back to haunt you later on!

Don't ask me how I know :-)

This is not true, take your time and run in moderation and you'll have no increased risk of joint pain when you get older.

Guess I’ll go for a swim!

Birds are metabolically much more active than mammals yet many have long lifespans. This prompted another finding that the number of cortical neurons can explain a large part of the variation in lifespan across species.

https://www.labroots.com/trending/cell-and-molecular-biology...

Flight gives birds greater protection from predation, which makes evolution towards biologies that pay a higher metabolic cost for greater longevity more advantageous. The same thing applies to larger animals, like cows, which tend to have longer lifespans once you normalize for heart/metabolic rate.

Hmm, less stress, lower heart rate, longer life.

I have read a few studies saying that periodic fasting / starvation can play a role as well.