Some Okinawan friend groups have been meeting since childhood
A moai isn't a book club or a support group with a name. It's a decades-long promise five or six people made to keep showing up.
Okinawa has some of the longest-lived populations ever studied, and researchers looking for the cause keep circling back to something that isn't diet or genetics: a social structure called moai. A moai is a small group, often five or six people, who commit to meeting regularly, pooling small amounts of money for each other in hard times, and simply staying present in one another's lives. Some of these groups, documented by researchers Héctor García and Francesc Miralles in Ikigai, started in childhood and were still meeting when their members reached their nineties.
There's no formal charter. No app, no scheduled agenda beyond showing up. What makes a moai durable isn't intensity, it's the opposite: low-key, unglamorous, recurring contact that doesn't depend on either person being in crisis or celebrating something. You don't need a reason to see them. That's the reason.
Most adult friendships in busier societies erode by default, not by choice, quietly starved of the recurring contact that used to happen automatically in childhood or school. A moai works because it removes the need to reinvent that contact from scratch every time — the commitment itself does the scheduling.
The habit worth borrowing isn't a Japanese word. It's the boring architecture underneath it: pick your five people, and put the meeting on the calendar before you need it.