Achieving metabolic freedom with CAROL Bike

Save $300 with code FREEDOM.

The shortest, most effective workouts—backed by science.

Developed with leading exercise researchers, CAROL Bike offers science-backed workouts proven to improve key health and fitness indicators in just minutes. In fact, you can achieve superior fitness benefits in 90% less time compared to regular cardio. For Ben, CAROL provides more than just time-saving fitness, it also delivers holistic results for a multitude of health markers—including metabolic flexibility, weight loss and lifespan—in the most efficient way.

Metabolic Freedom Podcast: A Shocking New Way To Burn Fat & Build Muscle Extremely Fast

Ben sits down with CAROL CEO and co-founder, Ulrich Dempfle, to talk about the scientifically proven benefits of CAROL Bike and REHIT.

“With just 2×20-seconds sprints, you send a very powerful signal to your body that it has to develop more and larger mitochondria, telling your body it has to get fitter and stronger.” – Ulrich Dempfle, CAROL CEO

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.

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.”

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.

Dave Asprey, the father of biohacking on CAROL Bike: “This is real!”

Performance psychologist Dr. Michael Gervais.

Hear from Human Performance Consultant Ben Greenfield, on the habit of working out.

As awarded by Garage Gym Reviews, the #1 trusted home gym equipment review site.

Good habits start
here

Order CAROL Bike now, try it for yourself—and build a habit that lasts.

Save $300. Use code FREEDOM 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 in the mainland US or Canada, 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/month at 0% APR.