CAROL Bike: science-backed workouts to deliver the fastest result

CAROL stands out not only as the most efficient exercise bike Tim has ever used but also prides itself on being deeply rooted in scientific research, ensuring every workout is optimized for effectiveness.

CAROL Bike: science-backed workouts to deliver the fastest result

Save $300 with code TIMBIOHACKER.

Time-saving, habit-forming—and scientifically proven to get you fittest, fastest.

Endorsed by Tim Gray, CAROL Bike stands as the pinnacle of fitness innovation, offering science-backed workouts that position it as the world's most effective exercise bike. A devoted user himself, Tim has experienced first-hand the transformative effects of the CAROL Bike on his personal health. Moreover, its consistent presence as a distinguished exhibitor at the annual Health Optimisation Summit underscores its eminent status in the wellness community.

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.

The most effective workouts tailored to you

CAROL Bike's AI-personalized workouts learn to push you to your limit, so every second matters. Developed with top exercise researchers, it's a collaboration designed to create quicker, more effective ways to get you fit. And CAROL Bike's 22 workouts are just the start.

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.

Rider in a pink polo on a CAROL Bike outdoors, greenery behind
Rider in a white top leaning over the handlebars of a CAROL Bike
Rider in a black t-shirt at a CAROL Bike screen indoors
Rider in a striped top on a CAROL Bike outdoors among trees
Rider resting forearms on a CAROL Bike in a kitchen
Rider in a black t-shirt on a CAROL Bike, screen lit
Rider in an orange top on a CAROL Bike beside framed artwork

Join our 25,000+ rider community

Read real reviews from riders who’ve experienced CAROL’s benefits themselves.

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.

Rider on a CAROL Bike against a purple geometric wall

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

Portrait of a man in a black shirt, indoors

Performance psychologist Dr. Michael Gervais.

Rider in a green hooded top seated at a CAROL Bike

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

Rider looking down at the twin screens of a CAROL Bike

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 TIMBIOHACKER 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% Financing. You can buy your CAROL Bike with Klarna. And pay just £199.58/month at 0% APR.