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.
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Rider reviews
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Our riders are at the heart of everything we do — and their fitness scores do the talking. Join our 35,000+ rider community.
My CAROL Bike has been great to help me achieve greater fitness and power without the time investment but with all the fun!
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!
It's easy to fit a quick 5-minute workout in, especially if you don't need to shower after your workout!
It is a keystone health habit builder that not only makes you feel better but makes you more conscious of acting in healthier ways throughout the day.
Dropping 2.6% bodyfat in ~8 weeks for someone who prioritizes a healthy lifestyle is no easy feat. I’d go so far as to label it as a gamechanger.
If you’re looking for a quick, effective biohack to improve your cardiovascular health, increase your endurance in an efficient way... this seems to be the move.
Real riders
Real riders, real results.
Discover the real impact of CAROL Bike straight from those reaping the benefits every day.
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One of the biggest barriers I hear around exercise is “I just don’t have the time” — and that’s exactly why CAROL Bike is such a game changer.

I sit down with Ulrich Dempfle, CEO and co-founder of CAROL Bike — so much of what we’ve been taught about health is built around doing more instead of what actually works.

« This is my favourite new workout because it saves me time and gives me better results. » — how @dylangemelli describes CAROL Bike.

Just 2 x 20 second all-out sprints can significantly improve VO2 max — train smarter in less time 🚴

Carol Bike | Max Results in Minimal Time — the Metabolic Freedom Podcast with Ulrich Dempfle.

I FOUND THE PERFECT BIKE! This one is effective and fun but also kicks my butt.
Trustpilot
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Exercising smarter with CAROL is improving my health week after week. The AI personalization takes any guesswork out of my workouts, so I continue to be challenged and exceed my goals. I am a powerful example of CAROL Bike’s effectiveness!
The most significant barrier for me and my busy clients is TIME, and CAROL removes that; in just 5-10 minutes, you get a cardio workout equivalent to 45 mins. Absolute game-changer!
CAROL has been a game changer for me. The REHIT Intense ride is revolutionary in the fitness realm. It’s the most effective way to get the fittest, the fastest.
This will help anyone get into the habit of exercising and will also support high performance athletes in reaching higher levels of strength and fitness. I recommend the purchase of CAROL without any hesitation!
The transformative impact on how my body feels has made CAROL my undisputed go-to for cardio workouts. As a sports medicine practitioner, I highly recommend it.
The REHIT program accelerates progress. The built in programming and recording of events creates the ideal feedback loop.
The community
From our community, who know us best.
Hear how our community of scientists, fitness thought-leaders and self-optimizers make the most of every workout with CAROL Bike.
More from the community
Biohacker ApprovedDave Asprey on why CAROL Bike is the smartest workout for self-optimizers.
“I love my CAROL Bike!”Dr. Michael Gervais on habits that compound.
A 45-minute run, in just 5Ben Greenfield on the science of REHIT.
“Most Innovative Exercise Bike”Garage Gym Reviews on why CAROL stands out from every other smart bike.
The offer
Good habits start here.
Order CAROL Bike now, try it at home for 100 days, and build a habit that lasts.
Feel the benefits risk-free for 100 days. Not for you? Return it for a full refund.
Delivered to your door, ready for your first calibration ride.
Pay just $232.92/month at 0% APR, with Affirm.
All our experts have MScs in Exercise Science — here to help you reach your goals.
