How 'Superman' actor David Corenswet ate and trained to get buff for the movie, according to his personal trainer

Tech Insider : Business, Style
A composite image of David Corenswet in 2019 and 2025.
 David Corenswet in 2019 and 2025.

Andrew H Walker/Variety/Penske Media via Getty Images; Ethan Miller/Getty Images

The taboo colon cancer symptom millennials are afraid to tell their doctors about

Tech Insider : Business
A woman holding her stomach while talking to doctor
Anal bleeding is the most common sign of colon cancer in young people, yet also one of the most taboo to talk about.

Chinnapong/iStock

A busy doctor says he lost almost half his body fat in 3 months with small changes to his routine

Tech Insider : Business
A composite image of a man posing shirtless before and after weight loss.
A 35-year-old man cut his body fat almost in half with full-body workouts, progressive overload, and smaller portions.

Courtesy of Simon Doyle/Adam Enaz

Stimulating your vagus nerve could help you live longer. A top scientist shares 3 easy things he does to activate his.

Tech Insider : Business
A composite image. On the left, a man wearing a blazer. On the right, a shower dripping from below.
Dr. Kevin Tracey has studied the vagus nerve and its link to inflammation for decades.

Matthew V. Libassi/ Getty Images

I moved from Los Angeles to Paris to live with my boyfriend at 46. The transition was harder than I imagined, but it was worth it.

Tech Insider : Travel, Business, Economy
Dufflyn Lammers standing under a tree in paris
The author moved from Los Angeles to Paris.

Courtesy of Courtney Bowlden Photography

My in-laws stayed in our 1-bedroom apartment for over a month. It was hard to be productive, so I had to set boundaries.

Tech Insider : Business
A couple walking into an apartment with suitcases, they are standing on the deck and walking toward the door.
The author's in-laws (not pictured) stayed with her and her husband when they came to America for their annual vacation.

Milko/Getty Images

A longevity researcher who lived in the forest for 3 years says he shaved a decade off his biological age — and his family loved the lifestyle

Tech Insider : Business, Environment
david holding up kid by legs, playing by the campfire
David Furman studies how the immune system ages.

David Furman

About 10 years ago, David Furman realized something had to change.

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

Billy Joel canceled all concerts after doctors found cerebrospinal fluid buildup in his brain. Here's what that means.

Tech Insider : Business
Billy Joel performing on stage
Billy Joel canceled his tour after being diagnosed with normal pressure hydrocephalus.

Ethan Miller/Getty Images

I sent a letter to a deployed soldier to thank him for his service. We are now celebrating our 29th wedding anniversary.

Tech Insider : Business
soldier reading letter among war
The author (not pictured) sent a letter with cookies to a soldier she had never met before.

Virojt Changyencham/Getty Images

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