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CAROL Bike’s Reduced Exertion HIIT (REHIT) workout. Increase VO2max. Live younger.

CAROL Bike's Reduced Exertion HIIT (REHIT) improves your fitness, including VO2max. And boosting it by 12% change is like turning the clock back on your age by 10 years.

What is VO2max?


VO2max stands for ‘volume, oxygen and maximum’. It reflects the maximum amount of oxygen you can burn while working out. Your VO2max will increase as you get fitter.​


VO2max and longevity


Studies show that having a high VO2max leads you to live longer and improve your health. Reducing your risk of major health disorders like cancers, heart disease, diabetes and strokes. Boosting your VO2max also helps lower blood pressure.


The most effective workout


CAROL Bike was designed to get you fittest, fastest. With CAROL’s signature REHIT workout, you can increase your VO2max by 12%—in just 8 weeks. And it works like this: 2x all-out 20-second sprints, a brief warm-up and recovery. From just 5 mins, 3 times a week. CAROL Bike’s REHIT gets you fit, saves you time—and helps you live younger.​

Get Fitter

Improve your fitness by 12% in just 8 weeks.

Live Younger

Improving your VO2max by 12% is like turning the clock back on your age by 10 years.

Live Healthier

Reduce your risk of type 2 diabetes by 62%—and blood pressure by 5%.

Next-level HIIT

Why Reduced Exertion HIIT (REHIT) is the most effective workout.

Maximum Metabolism

You’ll burn more calories on a 15-minute CAROL ride, than a 30-minute run.

Time to thrive

Make the most of your time with CAROL Bike's short and efficient REHIT workouts.

Boost your brainpower

Get fit, stay sharp: how high-intensity exercise and BDNF benefit your brain.

12 benefits of cycling

Regular cycling can help strengthen your heart and lungs, reduce the risk of certain types of cancer, and more.

Demo: How to do REHIT on CAROL Bike

Explore a hands-on guide to doing REHIT on CAROL Bike, showcasing its efficient, effective workouts tailored for every fitness level.

What is a REHIT workout?

Explore REHIT, the game-changing workout that redefines time-efficient training with just 2x20-second sprints.

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