Fitness 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.
CAROL: la mejor bicicleta estática del mercado
Developed with leading exercise researchers, CAROL Bike offers the shortest, most effective workouts—backed by science. It’s the world’s first home REHIT exercise bike. Delivering the same results as a 45-minute run—in just 5.
What makes CAROL Bike special?
The shortest, most effective workouts. Our signature REHIT workout creates the most potent training stimulus with just 2x20-second sprints. It’s scientifically proven to deliver double the health and fitness benefits compared to normal exercise—in 10% of the time.
Personalized to your fitness and goals. CAROL Bike's AI-personalization means it's suitable for any age and any fitness level. Our AI learns to push you to your limit, applying automatic and instant resistance, to ensure your workouts are most effective for you.
Significant results in just 8 weeks. CAROL Bike is scientifically proven to improve your VO2max by 12%—in just 8 weeks. That's like turning the clock back on your age by 10 years.
A simple habit that works
5 minutes, 3x a week. CAROL Bike workouts are scientifically proven to be the most effective cardio workout—and so easy to fit into your routine. Giving you back time for the things that matter most.
Get meaningful results in just 8 weeks
CAROL Bike's short, effective workouts mean you can achieve double the health and fitness benefits of regular exercise—in just 10% of the time. And the best part—it’s all backed by science.
Get fitter. Improve your cardio fitness by 12%—in just 8 weeks.
Live healthier. Reduce your risk of type 2 diabetes by 62%—and blood pressure by 5%.
Lose weight. Burn twice as many calories on CAROL Bike than regular exercise.
CAROL Bike
Starting at: $2,795 (finance options available through Affirm).
CAROL membership: $19.99/month.
Highlights
- The only bike fully optimized for REHIT
- 18 workouts to choose from
- Fully commercial-grade exercise bike
- AI-controlled, motorized resistance applied instantly
- 2K resolution, 11″ touchscreen for sharp image quality
- 45.5″ x 22″ space requirement, smaller than your average yoga mat
- Compatibility with a wide range of third-party apps (e.g. Peloton Digital, Zwift, Netflix)
Loved by our community
Hear how our community of riders and fitness thought leaders get the most out of CAROL every day.
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.
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.
Join our 35,000+ rider community
Read real reviews from riders who’ve experienced CAROL’s benefits themselves.
"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.”
Good habits start here.
Order CAROL Bike now, try it for yourself—and build a habit that lasts.
100-Day Home Trial. Try CAROL Bike at home for 100 days. And if it’s not for you, return it and get a refund.
Delivery. If you live in the mainland US, get your new CAROL Bike delivered to your door. Estimated delivery is currently 5-7 weeks.
0% APR Financing. You can buy your CAROL Bike with Affirm. And pay just $232.92 for 12 months at 0% APR.
Real riders, real results.
All rider reviewsFitness 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
El ancla cardiovascular de 5 minutos
Melini’s story: the science sold her, the results kept her riding.
Un beneficio personal de una mejor salud cardiovascular: la historia de Mark
At 52, Mark blamed erectile dysfunction on age. Better cardio changed that — and his confidence with it.
Me despeja la cabeza por completo.
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.