• Dr. Steven Austad is the scientific director of the American Federation for Aging Research. • Austad believes too many people are obsessed with longevity, focusing on dubious trends. • Austad follows 2 habits for his health: heavy exercise and time-restricted eating.

Dr. Steven Austad, the scientific director of a nonprofit researching healthy aging, never fretted too deeply about his own longevity.

"I used to train lions for a living," Austad told Business Insider. "It was not something that you would do if you were thinking about living a long time."

Prior to his career at the American Federation for Aging Research, Austad was a biologist who focused on field work in places like Venezuela and East Africa. He became interested in aging research not because he wanted to crack the

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