The community
Par notre communauté, qui nous connaît le mieux.
CAROL’s community of over 35,000 riders are optimizing their health and fitness and living younger and happier lives. Discover how they make every second count with CAROL Bike.

The 5-minute cardiovascular anchor
Melini’s story: the science sold her, the results kept her riding.
A personal benefit of better cardio—Mark’s story
At 52, Mark blamed erectile dysfunction on age. Better cardio changed that — and his confidence with it.
It clears my head completely.
Stanislav boxed for years and found most modern workouts too soft. The mental reset surprised him most.
What a doctor actually does for cardio
He’s medically trained, time-poor, and 6 months in. Dr. Jordan Robins on why CAROL stuck.
“CAROL, there is no substitute.” - Jeremiah’s story, 8 weeks in
A YouTube rabbit hole, an order placed the same day, and a VO2max up from 44 to 52.4 in 8 weeks.
The case for frictionless fitness
Marco knew sprint training worked; it just never happened. Removing the friction is what changed.
“Seeing my body changing makes me very happy.”
One month in, Kelly rides more often than she ever did at a gym — and can see the difference.
"It’s a technological marvel"
At 72, John has no time for Zone 2 — so his longevity plan is 2x20-second sprints, a few times a week.
Staying fit, focused, and sleigh-ready with CAROL Bike.
Santa on efficient workouts, the longest night of the year, and routine over resolutions.
“My doctor was blown away by the results.”
Marshall has tested fitness gear for years. One ride, and a later stress test, made CAROL Bike the keeper.
CAROL Bike: The 5-minute habit that’s lasted 5 years
At 71, Maggie has ridden twice a week for 5 years — no squawking instructors required.
CAROL Bike: The one habit that lasted beyond lockdown
Most pandemic fitness buys were abandoned. Five years on, Alan’s CAROL Bike is still in the routine.
How CAROL Bike took my training to the next level
A decade of sprint training, and Paul still hit a new peak power on CAROL Bike.
Why CAROL Bike is essential for this wellness expert
A physical therapist on lower blood pressure, a higher VO2max, and a bike her whole family uses.
How I built a decade-long fitness habit with CAROL
Paul didn’t believe the hype—until a 5-minute ride changed everything. See how he built a decade-long fitness habit with CAROL Bike.
How CAROL helped Katherine stay fit through it all
Five years, multiple pregnancies, and one bike that adapted through every phase of Katherine’s training.
“CAROL Bike takes away all excuses”
Nearly 600 rides since 2019: how a holistic dentist keeps his VO2max climbing in minutes a week.
“I needed the most efficient way to rehabilitate my heart”
After losing 40% of his heart’s pumping capacity, Nigel needed the most efficient rehab he could find.
“I felt amazing after 7 minutes”
Bijal swapped her Peloton after one 7-minute trial at a conference. Three years on, her doctor is convinced.
“It’s never too late”—Sandra’s story
Approaching 75, the founder of the Functional Medicine Coaching Academy rides to stay fit, sharp and strong.
Beating genetics with CAROL Bike
A quadruple bypass at 34 made cardio non-negotiable. Matt found a version of it he’d actually do.
From last to leaderboard: A transformation story
Learn how the mental challenges of CAROL Bike workouts empowered rider Ed to achieve significant fitness milestones and newfound mental toughness.
Beating heart concerns with CAROL Bike
As a lifelong fitness enthusiast, staying fit was nothing new to Dexil. However, as concerns about heart health began to emerge, he needed a solution.
Stress down, fitness up: Kris Daniels' success with CAROL
A chance ride at Upgrade Labs turned into lower stress, better blood pressure, and a habit that stuck.
Unlocking fitness excellence with Dave Pascoe
At 61, biohacker Dave Pascoe has the biological age of a 38-year-old. CAROL Bike is part of how.
Ally’s adaptive training: Merging CAROL Bike and martial arts
Martial artist Ally Sinyard leverages CAROL Bike for cardio health and workout variety, finding an efficient, optimized fitness solution.
Finding fitness after fatherhood with CAROL
Fitness slipped after his first child arrived. Anthony found his way back with 5-minute rides at home.
From injury to peak performance
Discover how Shauna lost 45lb., recovered from injury, improved fitness, and climbed the leader board in just 6 months with CAROL Bike.
Gaby Moreno: Climbing to new heights with CAROL Bike
An MD, functional medicine practitioner and rock climber on the training partner that keeps up with her.
A GP's vision for revolutionizing healthcare with CAROL Bike
An NHS GP wants REHIT on prescription, and is researching what it could do for diabetes and cholesterol.
Beyond survival: How CAROL Bike fueled Carolyn’s comeback
Hit by a car and left with a broken femur, Carolyn rebuilt her health on 5-minute rides.
A former first responder's journey with CAROL Bike
A former first responder turned entrepreneur on fitting real training into a demanding life.
The ultimate CAROL Bike resource
Our co-founder’s one-stop guide to REHIT, CAROL’s features, habit-building and the workouts themselves.
The rider behind the revolution: Ulrich's rider story
The engineer who built CAROL Bike on how it changed his own training — plus a holiday message.
Defying age, defining fitness: Andrea’s CAROL journey
At 55, Andrea has a VO2max that rivals riders in their twenties — and a comeback from injury behind it.
From energizing mornings to marathon prep: Everett's story
CAROL exceeded rider Everett's expectations, becoming an integral part of his family's daily routine and supporting his marathon prep.
CAROL Bike on "Better with Dr. Stephanie” Podcast
Ulrich Dempfle joins Dr. Stephanie Estima to unpack the science of REHIT and why 5 minutes is enough.
Simone's journey with CAROL: From podcast to peak fitness
A podcast started it. Three months and three rides a week later, Simone tells everyone.
"In 10 minutes I increased my longevity by 10 years"
Understand Joel Evan’s fitness journey with CAROL Bike, highlighting how the AI-powered bike helped him achieve impactful results in minimal time.
A CrossFitter’s perspective—Michael Kummer
40 seconds of work, the benefits of a 45-minute run — a CrossFitter’s take on where CAROL fits.
“I'm excited about a different way to train on a bike.”
Strength coach and fitness writer Colin Jenkins on what his first CAROL Bike workout felt like.
Reduced Exertion HIIT (REHIT) training explained
How to upgrade your fitness program and increase fat loss with CAROL—the world’s only home REHIT exercise bike—according to Mike Mutzel.
"This is now the only cardio that I do."
Medical expert Dr. Gains recommends CAROL Bike as his go-to cardio workout due to its unparalleled effectiveness in just 5 minutes.
Co-Founder Q&A: Ulrich Dempfle
CAROL’s co-founder answers the questions riders ask most, from the first prototype to what’s next in R&D.
Benefits of a 45-minute run—in just 5
Ben Greenfield’s alternative take on health — and why CAROL Bike is the cardio he actually does.
“Most Innovative Exercise Bike 2022”
Coop tested CAROL Bike for 2 months, then named it the most innovative exercise bike of 2022.
Biohacker Approved
CAROL is the bike of choice at all of Dave Asprey's Upgrade Labs — the world’s first Human Upgrade Centers — and here's why.
“I love my CAROL Bike!”
Hear from Dr. Michael Gervais, a performance psychologist who’s helped world-class athletes and organizations raise their game for over 2 decades.9 sur 48 affichés
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