The Human Upgrade
How to Hack Your Cardio Workout
“This is real. CAROL Bike gives you double the results in 90% less time.”
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CAROL in conversation
Welcome to the CAROL podcast hub—a curated collection of conversations featuring CAROL co-founder and CEO, Ulrich, alongside leading health and fitness experts. This is your opportunity to hear directly from the minds shaping the future of fitness.
Listen. Learn. Transform.
Immerse yourself in the science, benefits, and real-life success stories of CAROL Bike with some of the most respected voices in health and fitness. Get exclusive insight from fitness pros, health influencers, and industry thought leaders on how CAROL’s efficient, effective workouts are revolutionizing fitness routines worldwide. Listen in, explore the benefits, and see how CAROL Bike fits into your fitness journey.
Podcast hub
CAROL on YouTube
BETTER! with Dr. Stephanie Estima
5 Minute Cardio? The Science of Reduced Exertion Interval Training
“CAROL Bike has really changed my opinion on cardio.”
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Ben Greenfield Life
Benefits of a 45-minute run — in 5
“CAROL is one of the most effective pieces of cardio equipment I’ve ever discovered.”
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The Resetter Podcast
Exercise Your Hormones with a 5-Minute Workout
“It’s like unlocking a superpower!”
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Finding Mastery
Get Fit in 5 Minutes? Revolutionizing the Health and Fitness Industry
“There’s literally no reason I can’t find 5 minutes to work out.”
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The Miracle Morning
The Fastest Way to Get Fit in 2024
“This bike can add years to your life. I'm absolutely hooked!”
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Midlife Conversations
402. Reduce Metabolic Markers and Improve VO2 Max with REHIT
“No long sessions, no messing up your hormones. How amazing is that?!”
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The Art of Being Well
This Surprising 5 Minute Cardio Exercise Improves Metabolic Health
“CAROL Bike has the potential to revolutionize our exercise routines.”
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The Thyroid Fixer
407. High Intensity Cardio Done Right
“Why didn’t I start this sooner? CAROL Bike is a game-changer.”
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The Dr. Gundry Podcast
Achieve Peak Fitness with 5 Minute Workouts
“This is an anti-aging machine.”
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LONGEVITY with Nathalie Niddam
#335 — Unlocking VO2 Max: time-saving secrets
“Game-changing equipment that offers efficient workouts in just minutes.”
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The Ben Azadi Show
#899 — A Shocking New Way to Burn Fat & Build Muscle Fast
“It only takes 5 minutes a day!”
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Rooted in Wellness with Mona Sharma
120. What Most People Get Wrong About Cardio
“I’ve genuinely loved adding CAROL Bike to my routine — it makes caring for your heart feel accessible, even on the busiest days.”
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The Dylan Gemelli Podcast
Episode #130 — featuring Ulrich Dempfle, co-founder of CAROL Bike
“The CAROL Bike has been a true game changer for me. I have been an avid over trainer the majority of my life, but CAROL has allowed me to maximize my workouts without overdoing it.”
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Real riders, real results.
All rider reviewsFitness score 49.2 · +9%
I’ve been training for a half marathon and since adding CAROL Bike to my daily routine in the past 2 weeks, my VO2max has gone up 5% already.
Fitness score 36.3 · +52%
My CAROL Bike has been great to help me achieve greater fitness and power without the time investment but with all the fun!
Fitness score 41.6 · +12%
In just 4 months, my VO2max has increased by about 12 points, and my heart rate has decreased by 10 bpm. For someone with a history of heart issues, these improvements are huge!
From the community.
More rider stories
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.Make every second count.
Join our 35,000+ rider community.