My father, and 4 uncle’s died of heart failures before reaching 70. I had a ton of health issues in my late 50’s.
Then I discovered walking 30 miles every week on Orchard Hills golf course in Washougsl, WA.
That rejuvenated my body, and got rid of all health issues.
Even 4 jabs of clot-shots covid vaccine could not do any damage. It has to be the boring but enormously beneficial regular exercise. There is no other explanation.