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Here's a number worth sitting with: a 2018 study in JAMA Network Open followed 122,000 people and found that each 1 MET increase in exercise capacity was associated with a 13% reduction in all-cause mortality. Not heart disease. Not cancer. All causes. The fittest participants had an
Newsletter
A 2010 meta-analysis by Brigham Young University psychologist Julianne Holt-Lunstad analyzed 308,000 people across 148 studies and found that strong social relationships increased survival probability by 50%. That's not a rounding error. That effect size exceeds exercise, exceeds obesity risk, and is on par with quitting smoking.
Newsletter
Harvard tracked 123,000 people for 34 years. Five habits added 12-14 extra healthy years. Here is the framework.