Centenarians say the biggest key to a long life wasn't diet or exercise

Older adults told Business Insider that they benefit from staying connected within their community.

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• A disciplined diet and exercise regimen may seem like the key to a long life.
• Business Insider's interviews with centenarians revealed other important longevity factors.
• Staying engaged with life, through hobbies and relationships, mattered more than optimized habits.

Living past 100 is often framed as the reward for discipline. Eat carefully...