I read a study once on centenarians and while there was no one set rule as to why they all lived so long, they did find three commonalities between all of them:

1) All had always been within their ideal weight guidelines.
2) All took little to no medication.
3) All handle stress very well. They did not dwell on their problems. On that note it’s worthy mentioning that most had no or only one or two children. In other words, kids will help drive you to your grave.

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