A doctor in her 40s uses 3 science-backed products to prevent wrinkles. She combines Korean and Western techniques.

Tech Insider : Business
A woman smiling.
Dr. Christine Hall grew up in the UK but spent the summers in South Korea with her Korean family.

Hind Abib

Dolly Parton's secret to staying young is incredibly simple

Tech Insider : Business
Dolly Parton on stage.
Dolly Parton will turn 80 in January.

Terry Wyatt/WireImage

I'm 81 and still working. It's not for the paycheck — it's part of my secret to aging well.

Tech Insider : Economy, Business, Sports
Mike Plummer
81-year-old Mike Plummer left corporate at 55 and has been working at a retail store for almost 15 years.

Jesse Brantman for BI

A dietitian made 5 simple changes to her eating habits for better brain health

Tech Insider : Business
A portrait photo of dietitian Ashley Koff in a royal blue suit next to a dark gray background.
Dietitian Ashley Koff said she's focusing on better brain health in her 50s with habits like eating more fish, cutting out alcohol, and balancing blood sugar.

Courtesy of Ashley Koff

A 100-year-old woman said her longevity routine includes lifting weights, eating ice cream, and going to the beach

Tech Insider : Business, Style
A split image shows an elderly woman at the gym working out next to a sepia-toned portrait of the same woman as a young teacher.
Mary Coroneos, a 100-year-old woman from Norwalk, Connecticut, regularly goes to the gym and socializes with friends from her long career as a teacher.

Courtesy of Mary Coroneos

A longevity doctor says he reversed his biological age by 11 years. Here are the 3 things he does every day to stay healthy for longer.

Tech Insider : Business, Sports
A composite image. On the left, a person reads on the beach. On the right, a man in a suit smiles at the camera.
Dr. Kurt Hong is an obesity doctor, nutrition researcher, and professor of medicine and aging.

Getty Images/ Kurt Hong

The first woman to complete the Boston Marathon is now 78 and runs most days. She shared 3 tips for getting fit at any age.

Tech Insider : Business
Composite image of a woman running, wearing a vest that reads,
In 1967, Kathrine Switzer became the first woman to officially run the Boston Marathon. A race official tried to stop her (right).

Kathrine Switzer/GALE Partners

A 95-year-old who plays golf and volunteers shares her tips for health and happiness

Tech Insider
Sally Froelich in a yellow shirt, putting a painting of a flower on a shelf.
At 95, Sally Froelich is active and plays golf three times a week.

Sally Froelich

A 90-year-old comedian still does gigs and plays golf. She shared her secrets for staying fit and funny.

Tech Insider
D'yan Forest performing onstage, holding a microphone.
D'yan Forest onstage. She's still performing at 90.

D'yan Forest

A sports medicine doctor shares 3 things she does to maintain muscle and stay active as she grows older

Tech Insider
A composite image. Headshot of Vonda Wright on the left. On the right is a photo of two yellow dumbells.
Dr. Vonda Wright follows the healthy aging advice she gives to patients.

Ashley Blencoe/Getty Images

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