Your workout done in 5-minutes
CAROL Bike gives you 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 superior health and fitness benefits compared to normal exercise—in 90% less 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.
Loved by our community
Hear how our community of riders and fitness thought leaders get the most out of CAROL every day.
Hear how busy entrepreneur and Holistic Weight Loss coach, Joel Evan, keeps fit and healthy using CAROL Bike.
The healthy living and tech enthusiast on why CAROL makes him a better athlete.
Strength influencer Colin Jenkins reviews CAROL Bike for 'Connect the Watts'.
Mike Mutzel on why power is the best measurement for cardio intensity.
Join our 30,000+ 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 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 in the mainland US, get your new CAROL Bike delivered to your door in 7-10 days.
0% APR Financing. You can buy your CAROL Bike with Klarna. And pay just £199.58/month at 0% APR.