63-year-old explorer Dan Buettner, known for researching "blue zones," advises on Instagram that lasting friendships and drinking three cups of green tea daily contribute to longevity.

63-year-old explorer Dan Buettner, known for researching "blue zones" where inhabitants enjoy long, healthy lives, advises on Instagram to surround oneself with "better friends" for longevity. He believes lasting friendships have a greater impact on health behaviors than diets and exercise. Buettner also highlights the benefits of drinking three cups of green tea daily, linked to a four-year increase in healthy life expectancy.