Fitness score 32.9 · +9%
It’s easy to fit a quick 5-minute workout in, especially if you don’t need to shower after your workout!
Meet CAROL—the bike that gets you fittest, fastest
Short. Smart. Scientific.
Short. Get the most efficient workout in just 5 minutes with CAROL Bike — short and easy to fit into your life.
Smart. AI-personalized workouts tailored to you – simple to perform and suitable for any age and fitness level.
Scientific. Scientifically proven to deliver superior health and fitness benefits in 90% less time compared to regular cardio.
Hear it from our riders
Read real reviews from riders who’ve experienced CAROL’s benefits themselves.
Fitness score 26.6 · +12%
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.
Fitness score 32.3 · +5%
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.
Fitness score 34.3 · +12%
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.
"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.”
Validated by top health experts
Hear how our community of scientists, fitness thought-leaders and self-optimizers make the most of every workout with CAROL Bike.
A former first responder’s journey with CAROL Bike
Hear how busy entrepreneur and Holistic Weight Loss coach, Joel Evan, keeps fit and healthy using CAROL Bike.
CAROL Bike on “Better with Dr. Stephanie” Podcast
Discover the power of REHIT for optimizing health with Dr. Stephanie Estima.
“Most Innovative Exercise Bike 2022”
As awarded by Garage Gym Reviews, the #1 trusted home gym equipment review site.
A CrossFitter’s perspective—Michael Kummer
The healthy living and tech enthusiast on why CAROL makes him a better athlete.
“I’m excited about a different way to train on a bike.”
Strength influencer Colin Jenkins reviews CAROL Bike for 'Connect the Watts'.
Reduced Exertion HIIT (REHIT) training explained
Mike Mutzel on why power is the best measurement for cardio intensity.
Your questions. Answered.
If you can’t find the answer to your question — email us at [email protected].
What is CAROL Bike?
What does CAROL Bike stand for?
CAROL stands for Cardiovascular Optimization Logic – our method to optimize and personalize cardio workouts, to make every moment mean more.
What are the benefits of CAROL Bike?
Research shows that with just 3×5-minute sessions a week, you can expect to:
– Improve your VO2max by 12% —in just 8 weeks
– Reduce your risk of type 2 diabetes by 62%—and blood pressure by 5%
– Burn more calories on a 15-minute CAROL ride than a 30-minute run
Find out more here.
How big is the bike?
CAROL Bike is designed to fit seamlessly into your home, with a footprint of 45.5″ x 22″ / 116cm x 56cm. Based on this we recommend allowing a space of 46″ x 46″ / 116cm x 116cm for the bike, plus an additional 22″ / 56cm to one side so that you can embark/disembark easily.
Orders & delivery
Can I try CAROL Bike before purchasing?
Yes, you can try CAROL Bike for yourself before you buy, at over 30 studios around the world. Find your nearest location here.
Don’t forget you can also enjoy a 100-day home trial, making purchasing your CAROL Bike entirely risk-free.
Where do you ship?
CAROL ships to most countries worldwide, meaning that no matter where you are, you can own the bike that gets you fittest, fastest.
Contact Customer Support if you’re unsure whether CAROL delivers
to your region.
How much does shipping cost?
If you live in the États-Unis continentaux, Canada or UK, you can get your new CAROL Bike delivered boxed to your front door, garage, or lobby of your building at ground level with our basic delivery option.
If you require delivery beyond ground level, you will need to purchase a room of choice delivery. You can also choose to get your bike delivered fully assembled.
Will I be charged duties and taxes?
If you live in the États-Unis continentaux, Canada or UK, you will not need to pay additional duties or taxes on your order.
If you live outside of these countries, you might need to pay additional duties or taxes. These will be calculated and collected by DHL before they deliver your bike. Find more information on their duties and taxes policy here.
How do I track my order?
You’ll receive an email with tracking information as soon as your bike has shipped – usually within 1-2 business days from placing your order.
Returns & warranty
What is the CAROL returns policy?
CAROL offers a 100-day home trial, no questions asked. If, for whatever reason, your CAROL Bike isn’t for you, we’re happy to refund you (excluding charges for room of choice delivery and assembly) and take back your bike.
This return service is free of charge if you live in the États-Unis continentaux, Canada or UK. For all other regions you will be refunded for your bike, minus your original shipping cost and the return shipping cost.
From 100 days after the date of delivery, you will not be able to return your bike or request a refund.
Once your bike has been collected by the carrier, it will be sent back to our warehouse for inspection. The inspection covers the operation of the bike as well as a walkthrough for any damages. As long as the bike is operational and only shows signs of minimal wear and tear, a full refund will be issued.
How do I return my CAROL Bike?
Arranging a return is easy, simply contact Customer Support and a member of the team will organize this for you.
We ask that you please return your bike in its original packaging.
Financing
What payment methods do you accept?
You can pay for your bike using all major credit and debit cards, as well as Apple Pay and Google Pay.
Do you offer a financing plan?
Yes, we offer a 0% APR Finance plan for those in the UK and US. You can pay over 12 months with Klarna in the UK, or Affirm in the US. Note that we act as a credit broker and not a lender. Financing is subject to a credit check and approval. In cases of partial approval, a down payment may be required. Late or missing repayments may have serious consequences and cause serious money problems.
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.