This as-told-to essay is based on a conversation with dermatologist Dr. Jessica Wu . It has been edited for length and clarity .

My dad has never tracked his sleep, and wouldn’t know what a macro is. He has never set foot in a gym, and doesn’t own sneakers (he prefers loafers). And yet, at 93, he continues to live a healthy, fulfilling life.

His habits are small and simple. But over 93 years, they’ve compounded to make a huge difference in his health. They’ve changed how I talk with my patients and how I think about my own health and well-being at 58.

My dad prioritizes movement, not exercise

My dad was an engineer, but he’s never been afraid of…

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