I'm the CEO of Klaviyo. I run on a 'creator-type' schedule and love Diet Coke and country music.

Tech Insider : Business, Sports, Technology
headshot of a man in a gray shirt next to a bookcase
Andrew Bialecki.

Courtesy of Klaviyo

This as-told-to essay is based on a conversation with Andrew Bialecki, the 40-year-old CEO of Klaviyo, based in Boston. It's been edited for length and clarity.

I lost 120 pounds in less than a year — these 5 small habits kept my weight loss on track

Tech Insider : Business, Environment, Sports
Tre Hubbard before/after shirtless selfies (bathroom photo on left, gym photo on right)
I played college football but struggled to maintain a routine after graduation.

Tre Hubbard

I work out with my 87-year-old mother. Training with her has made me rethink the way I want to age.

Tech Insider : Business
janet osborne and her mother seated side by side
My mom and I have a 24-year age gap between us, but we still enjoy training together.

Janet Osborne

I did nothing for my flexibility but take 2 Pilates classes a month. I improved by almost 20%, according to a 3D scan.

Tech Insider : Business
Person in overhead squat
My overhead squat improved by 15 points. The only new thing I did was taking occasional reformer Pilates classes.

Julia Pugachevsky

Your muscle-building blueprint: 3 ways to boost your gains from an exercise science pro

Tech Insider : Business
Bodybuilder and researcher Dr Jim Stoppani flexes in the gym
Techniques like supersets and periodization can help you build more muscle in the gym, according to exercise science pro Jim Stoppani.

Courtesy of Jim Stoppani

I'm the CEO of The Ironman Group. I start my days training to climb mountains and end them with 'Schitt's Creek' episodes

Tech Insider : Sports, Business, Environment
Ironman Group cEO Scott DeRue
Scott DeRue is CEO of The Ironman Group.

Ironman

At 80, 'Ghostbusters' star Ernie Hudson says his fitness goal is surprisingly simple

Tech Insider : Business, Travel
Ernie Hudson.
Ernie Hudson.

Nathan Congleton/NBC

Kevin Hart works out like a pro athlete. His trainer says heavy lifting isn't the key to staying shredded.

Tech Insider : Business
Actor and comedian Kevin Hart poses on the red carpet at a Golden Globes event in a suit.
Kevin Hart has been committed to a disciplined workout plan for years.

Gilbert Flores/Penske Media via Getty Images

I'm 81 years old, and I still love going to the gym. It's helped me stay social and physically healthy.

Tech Insider : Business
Cynthia Wall in the pool at her gym with a friend
The author (right) has been going to the gym for decades and is now 81.

Courtesy of Cynthia Wall

Successful women say exercise is a core part of their routines. Their essentials include Alo Yoga clothes and an Oura Ring dupe.

Tech Insider : Business, Sports, Style
Cropped shot of a woman holding dumbbells, yoga mat and sports water bottle in her hands.

Getty Images; BI

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