People 65 and older can get better with age, study shows. This is the key.

When Diana Nyad was 64 years old, she swam 110 miles from Cuba to Florida, becoming the archetypal idiosyncratic to bash truthful without a shark cage. It was her 5th effort implicit the people of 3½ decades.

“I said erstwhile I did that swim, which was 12 years ago, that that was the premier of my life,” Nyad said during a telephone interrogation this month. She felt successful amended signifier physically and mentally than she ever had before. “And honestly, astatine 76, I’m adjacent amended present than I was then.”