When most people think of longevity, they imagine adding years to their lives. But to Dr. Peter Attia, one of the leading voices in the emerging field of longevity medicine, living longer is about more than counting birthdays. It's about improving the quality of physical, emotional, and cognitive health — and he says intense exercise is part of the way to achieve it.

"At this point in my life, I feel like I'm making fewer novel insights around how to manage cholesterol and blood pressure than I am in thinking about ways to get people to be more compliant with exercise," Attia told 60 Minutes contributing correspondent Norah O'Donnell.

A former surgeon trained at Johns Hopkins, Attia now has a podcast and a bestselling book that have made him a public figure in the growing movement to o

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