Experience the bike of the future
Human performance approved
Experience the bike of the future
Use code ‘BEN’ at checkout to get £300 off.
Shop CAROL Bike
Experience the bike of the future
on CAROL Bike
“CAROL is one of the most unique and effective cardio equipment I’ve ever discovered. You need to find a way to work out that fits you and your life. CAROL does exactly that.” – Ben Greenfield.Experience the bike of the future
The shortest, most effective cardio workout
As a go-to authority in health, fitness, and biohacking, Ben Greenfield is an expert in optimizing health and fitness results. After discovering CAROL Bike's unique REHIT workouts, Ben now has a CAROL in his office and uses it to achieve superior benefits in 90% less time compared to traditional steady-state cardio.
“You’re going to see a marked difference in your fitness, your health and your body investing only 26 minutes a week. It's a game changer." - Ben Greenfield.
What sets CAROL
Bike apart?
Shortest, most effective workouts
Just 5 minutes, 3x a week. Scientifically proven to deliver results and designed for time-poor people.
Personalized to your fitness and goals
CAROL Bike's AI-personalization makes it suitable for any age and fitness level.
Significant results in 8 weeks
CAROL Bike is proven to improve your VO2max by 12% in just 8 weeks, effectively turning back the clock by 10 years on your physical fitness.
Your results,
supported by
science
Get Fitter
Improve your cardio fitness by 12% in just 8 weeks.
Save Time
Get all the benefits of a 45-minute run in just 5.
Live Healthier
Reduce your risk of type 2 diabetes by 62% – and your blood pressure by 5%.
Live Younger
Improving your VO2max by 12% is like turning your body clock back 10 years.
Listen to Ben's podcast with Ulrich Dempfle, CEO and co-founder at CAROL
Developed in collaboration with exercise researchers, CAROL Bike is proven to give you the shortest, most effective workout. Listen to Ben and Ulrich, CEO and co-founder at CAROL, discuss how to get the benefits of a 45-minute run in under 9 minutes (& a 12% VO2max increase & 62% lower risk of diabetes). CAROL is the new AI bike that’s taking the fitness world by storm.
From our community, who know us best.
Hear how our community of scientists, fitness thought-leaders and self-optimizers get the most out of CAROL Bike every day.
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.
Save £300
Use code BEN at checkout to save £300 off your CAROL Bike purchase.
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.
Fast Delivery
If you live on the UK mainland, get your new CAROL Bike delivered to your door.
0% APR Financing
You can buy your CAROL Bike with Klarna. And pay just £199.58 for 12 months at 0% APR.