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The 82-year-old time traveler: Science reveals how an octogenarian reclaimed the body of a 20-year-old

A retired car mechanic who couldn't run a single mile at age 66 is now smashing world records and rewriting the biological ...

At 82, he’s as fit as a 20-year-old. His body holds clues to healthy aging

Scientists are studying Juan López García, 82, a world-record-holding ultramarathoner, to learn how we can stay healthy as we age.