A healthy, active 100-year-old shares her 3 science-backed tips for living a long, happy life

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Barbara Fleischman sat on a hair in a colorful jacket.
Barbara Fleischman is 100 years old.

Optimist Consulting

A man who's been having breakfast at McDonald's almost every day for 36 years went to the chain for his 100th birthday

Tech Insider
A chicken sandwich, french fries, a Big Mac box, and a soda on a tray.
McDonald's meal.

Patcharaporn Puttipon2465/Shutterstock

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