https://carolbike.com/
Posted: Tue Jun 17, 2025 1:09 pm
Introducing Reduced Exertion
HIITDeveloped by leading scientists, Reduced Exertion HIIT (REHIT) is designed to provide the shortest, most efficient exercise workout. Just 2x20-second sprints create the most powerful training stimulus. With CAROL's AI-personalization making it suitable for any age and fitness level.
Discover more about REHITYour results, backed by science CAROL Bike is scientifically researched and proven to improve your fitness and health. Just 3x5-minute REHIT rides a week will improve your cardio fitness by 12% in just 8 weeks. Get Fitter Improve your fitness by 12% in just 8 weeks. 1 MIN READLive Younger Improving your VO[sub]2[/sub]max by 12% is like turning the clock back on your age by 10 years. 1 MIN READLive Healthier Reduce your risk of type 2 diabetes by 62%—and blood pressure by 5%. 1 MIN READNext-level HIIT Why Reduced Exertion HIIT (REHIT) is the most effective workout. 2 MIN READMaximum Metabolism You’ll burn more calories on a 15-minute CAROL ride, than a 30-minute run. 1 MIN READTime to thrive Make the most of your time with CAROL Bike's short and efficient REHIT workouts. 1 MIN READ
More on ScienceOptimized for maximum effectiveness and safetyCAROL Bike offers all essential features to make REHIT easy, effective and safe. All components have been meticulously engineered to provide the optimal riding experience.
Explore our design Intelligent design, explained CAROL Bike is the only bike fully optimized for Reduced Exertion HIIT (REHIT)— making it simple, effective, and safe. It provides the shortest, most efficient workouts suitable for any age and fitness level - while offering greater versatility and choice than most other smart bikes. Why do you need a special bike? Discover the special features essential for easy and safe REHIT. 2 MIN READOptimal design Learn about the rationale behind our key design choices. 2 MIN READInnovation beyond comparison Discover how CAROL’s unique concept and design set it apart from Peloton and other bikes. 1 MIN READUnbeatable Value Discover how CAROL Bike offers great value for money 1 MIN READRisk-free 100-day trial Experience CAROL Bike for yourself with a risk-free home trial. 1 MIN READUnlock the key to longevityLearn how increasing your VO[sub]2[/sub]max can help you live longer, healthier, and better in our free guide for enhancing longevity.
Download Now
A simple habit, that works Just 2x20-second sprints, 3x a week. Scientifically-proven to be the most efficient cardio workout—a moment of effort you can always master. A Simple Habit New riders hit an average of 3.2 rides a week, in their first 100 days. 1 MIN READ15 Minutes a Week CAROL Bike’s science-backed workouts. The short, smart, simple fit for your life. 1 MIN READAI-Personalized Ride CAROL Bike’s AI algorithm calibrates every moment on the bike to you. 1 MIN READYour Progress CAROL Bike’s Fitness Score lets you track how your fitness is improving. 1 MIN READYour Favorite Apps Seamlessly connect to apps like Zwift, Kinomap, Peloton Digital and more. 1 MIN READEndless Entertainment CAROL Bike integrates with entertainment apps like Netflix, Disney+, YouTube and more. 1 MIN READCAROL Bike workout recommendations Find the perfect CAROL Bike workouts for your health and fitness goals. 4 MIN READ
More on HabitHear it from our riders
Read all Reviews
49.2+9%
Fitness score
36.3+52%
Fitness score
32.9+9%
Fitness score
26.6+12%
Fitness score
32.3+5%
Fitness score
34.3+12%
Fitness score
30.3+10%
Fitness score
Real riders, real resultsOur riders are at the heart of everything we do. Discover the real impact of CAROL Bike straight from those reaping the benefits every day.
Michael KummerCAROL rider for 3 years
Christy LemireCAROL rider for 1 year
Joel EvanCAROL rider for 2 years
Amy StantonCAROL rider for 1 yearFrom 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. Biohacker Approved Dave Asprey, the father of biohacking on CAROL Bike: “This is real!” 1 MIN READ“I love my CAROL Bike!” Performance psychologist Dr. Michael Gervais. 1 MIN READBenefits of a 45-minute run—in just 5 Hear from Human Performance Consultant Ben Greenfield, on the habit of working out. 1 MIN READ“Most Innovative Exercise Bike 2022” As awarded by Garage Gym Reviews, the #1 trusted home gym equipment review site. 1 MIN READ
More on CommunityGood habits start hereOrder CAROL Bike now, try it for yourself—and build a habit that lasts.100-Day TrialFeel the benefits of CAROL Bike for yourself risk-free for 100 days. And if it’s not for you, return it and get a full refund.Fitness AdvisorsAll our experts have MScs in Exercise Science—here to help you achieve your fitness goals.Free DeliveryIf you live in the mainland US, get your new CAROL Bike delivered for free in 7-14 days.0% APR FinancingYou can buy your CAROL Bike with Affirm. And pay just $216.25 for 12 months at 0% APR.Bike SpecificationsTechnologyDimensionsMembershipRider SupportCommercialExplore Support About Us Stay in the loopEmail
Follow us
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CAROL is a brand name of Integrated Health Partners Limited (IHPL), 2107 North Decatur Road, Suite 402, Decatur, GA 30033.
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[img]chrome-extension://kljjoeapehcmaphfcjkmbhkinoaopdnd/08059a6dbd445c1fb9d7.svg[/img]
HIITDeveloped by leading scientists, Reduced Exertion HIIT (REHIT) is designed to provide the shortest, most efficient exercise workout. Just 2x20-second sprints create the most powerful training stimulus. With CAROL's AI-personalization making it suitable for any age and fitness level.
Discover more about REHITYour results, backed by science CAROL Bike is scientifically researched and proven to improve your fitness and health. Just 3x5-minute REHIT rides a week will improve your cardio fitness by 12% in just 8 weeks. Get Fitter Improve your fitness by 12% in just 8 weeks. 1 MIN READLive Younger Improving your VO[sub]2[/sub]max by 12% is like turning the clock back on your age by 10 years. 1 MIN READLive Healthier Reduce your risk of type 2 diabetes by 62%—and blood pressure by 5%. 1 MIN READNext-level HIIT Why Reduced Exertion HIIT (REHIT) is the most effective workout. 2 MIN READMaximum Metabolism You’ll burn more calories on a 15-minute CAROL ride, than a 30-minute run. 1 MIN READTime to thrive Make the most of your time with CAROL Bike's short and efficient REHIT workouts. 1 MIN READ
More on ScienceOptimized for maximum effectiveness and safetyCAROL Bike offers all essential features to make REHIT easy, effective and safe. All components have been meticulously engineered to provide the optimal riding experience.
Explore our design Intelligent design, explained CAROL Bike is the only bike fully optimized for Reduced Exertion HIIT (REHIT)— making it simple, effective, and safe. It provides the shortest, most efficient workouts suitable for any age and fitness level - while offering greater versatility and choice than most other smart bikes. Why do you need a special bike? Discover the special features essential for easy and safe REHIT. 2 MIN READOptimal design Learn about the rationale behind our key design choices. 2 MIN READInnovation beyond comparison Discover how CAROL’s unique concept and design set it apart from Peloton and other bikes. 1 MIN READUnbeatable Value Discover how CAROL Bike offers great value for money 1 MIN READRisk-free 100-day trial Experience CAROL Bike for yourself with a risk-free home trial. 1 MIN READUnlock the key to longevityLearn how increasing your VO[sub]2[/sub]max can help you live longer, healthier, and better in our free guide for enhancing longevity.
Download Now
A simple habit, that works Just 2x20-second sprints, 3x a week. Scientifically-proven to be the most efficient cardio workout—a moment of effort you can always master. A Simple Habit New riders hit an average of 3.2 rides a week, in their first 100 days. 1 MIN READ15 Minutes a Week CAROL Bike’s science-backed workouts. The short, smart, simple fit for your life. 1 MIN READAI-Personalized Ride CAROL Bike’s AI algorithm calibrates every moment on the bike to you. 1 MIN READYour Progress CAROL Bike’s Fitness Score lets you track how your fitness is improving. 1 MIN READYour Favorite Apps Seamlessly connect to apps like Zwift, Kinomap, Peloton Digital and more. 1 MIN READEndless Entertainment CAROL Bike integrates with entertainment apps like Netflix, Disney+, YouTube and more. 1 MIN READCAROL Bike workout recommendations Find the perfect CAROL Bike workouts for your health and fitness goals. 4 MIN READMore on HabitHear it from our riders
Read all Reviews
Everett Myers3 MONTHS"I’ve been training for a half marathon and since adding CAROL Bike to my daily routine in the past 2 weeks, my VO[sub]2[/sub]max has gone up 5% already."
49.2+9%
Fitness score
Dr Gabriela Moreno1.5 YEARS"My CAROL Bike has been great to help me achieve greater fitness and power without the time investment but with all the fun!"
36.3+52%
Fitness score
Phil Cox5 MONTHS"It's easy to fit a quick 5-minute workout in, especially if you don't need to shower after your workout!"
32.9+9%
Fitness score
Ann Meyers3 MONTHS"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."
26.6+12%
Fitness score
Peter Bauman9 MONTHS"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."
32.3+5%
Fitness score
Germany Mayfield9 MONTHS"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."
34.3+12%
Fitness score
Ally Sinyard3 MONTHS"CAROL has been a really great way for me to keep active, for me to keep moving without putting too much stress on my body."
30.3+10%
Fitness score
Real riders, real resultsOur riders are at the heart of everything we do. Discover the real impact of CAROL Bike straight from those reaping the benefits every day.
Michael KummerCAROL rider for 3 years
Christy LemireCAROL rider for 1 year
Joel EvanCAROL rider for 2 years
Amy StantonCAROL rider for 1 yearFrom 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. Biohacker Approved Dave Asprey, the father of biohacking on CAROL Bike: “This is real!” 1 MIN READ“I love my CAROL Bike!” Performance psychologist Dr. Michael Gervais. 1 MIN READBenefits of a 45-minute run—in just 5 Hear from Human Performance Consultant Ben Greenfield, on the habit of working out. 1 MIN READ“Most Innovative Exercise Bike 2022” As awarded by Garage Gym Reviews, the #1 trusted home gym equipment review site. 1 MIN READ
More on CommunityGood habits start hereOrder CAROL Bike now, try it for yourself—and build a habit that lasts.100-Day TrialFeel the benefits of CAROL Bike for yourself risk-free for 100 days. And if it’s not for you, return it and get a full refund.Fitness AdvisorsAll our experts have MScs in Exercise Science—here to help you achieve your fitness goals.Free DeliveryIf you live in the mainland US, get your new CAROL Bike delivered for free in 7-14 days.0% APR FinancingYou can buy your CAROL Bike with Affirm. And pay just $216.25 for 12 months at 0% APR.Bike SpecificationsTechnologyDimensionsMembershipRider SupportCommercialExplore Support About Us Stay in the loopEmail
Follow us
Instagram Facebook Youtube Twitter Linkedin
CAROL is a brand name of Integrated Health Partners Limited (IHPL), 2107 North Decatur Road, Suite 402, Decatur, GA 30033.
Get Fitness AdviceShop CommercialLog in
Canada — $ Global — £ UK — £ US — $
XIt seems you’re in United Kingdom, continue to the UK Store?locale
Canada — $ Global — £ UK — £ US — $
Confirm
[img]chrome-extension://kljjoeapehcmaphfcjkmbhkinoaopdnd/08059a6dbd445c1fb9d7.svg[/img]