You’ve probably heard a story or two about someone who lived past 100. Perhaps you have a wise-cracking great-grandfather. Or maybe you heard about that WWII veteran who ate ice cream and smoked cigars every day.
According to a recent study, one secret to a long life might be wholly unrelated to what we eat or how much we exercise: our optimism.These stories tend to be both remarkable and slightly baffling. Sometimes, they defy our assumptions about what keeps people alive. What is their secret?
