The CAROL Bike

Designed in the lab, enjoyed at home

5 manufacturers. 40 prototypes. 250,000 rides. That’s just a taster of what it took to bring you an AI-powered exercise bike that lets you achieve results previously only seen in a lab.

Computer controlled brakes

Certified highest accuracy power

Silent belt drive

Frictionless magnetic brake

Freewheel safety clutch

Sensors for RPM and resistance level

Hand heart rate monitor

Continuously personalized and optimised workouts

Designed by scientists to deliver results

When you want special results you need a special bike

“CAROL is the only system that accurately replicates my research outside of the labs.” Dr. Niels Vollaard

 

The maximum intensity levels during a CAROL sprint are about three times higher than in HIIT cycling classes. It is impossible to perform at this level on a regular exercise bike.

You’d need to:

  • Apply the correct resistance (just in your sweet spot)
  • At the right time (just after you’ve built up speed at a low resistance)
  • In a fraction of a second (instantly go from very low to very high)

In other words, it’s very difficult without an exercise physiologist by your side.

To perform maximum intensity sprints and get maximum results on a CAROL bike couldn’t be easier.

Simply get on, log in, and the bike will guide you through two 20-second maximum intensity sprints (personalizing the resistance to you), in between gentle warm-up, recovery, and cool-down periods.

Measuring glycogen level to measure depletion after 10-15 seconds of the first sprint
Dr Niels Vollard | University of Stirling

“In order to replicate lab protocols, a bike must be controlled by a computer, and run a protocol which can instantly switch from hyperbolic to constant torque mode. Specialized software and expensive hardware are needed. CAROL has got it spot on and is the only consumer bike I know of that can do this.”

Dr. Vollaard, Professor of Health and Exercise Science at Stirling University

Designed by engineers for greater quality

Shorter, smarter workouts

You don’t need to worry about changing resistance or tracking your output. CAROL does it all, automating and guiding you through each maximum intensity sprint so you can just focus on going all out.

The software learns your ability, measures each performance, and adapts each ride to push you to maximum intensity. Our computer-controlled magnetic brake system applies a personalized and precisely calibrated resistance at the exact right time and pace.

CAROL has been certified to the most accurate standard for commercial-grade ergometers and the bike’s sensors and algorithms will quantify precisely your performance and fitness level through CAROL’s proprietary Octane Score.

This means that as you get fitter CAROL will make it harder and if you’ve been on holiday and aren’t where you were when you left, CAROL will make it a little easier.

Lenovo tablet screen of the CAROL exercise bike

Designed by doctors to keep you safe

Safety in the saddle

Our end goal is healthy hearts. That’s why CAROL has an integrated heart rate monitor and built-in safety algorithms that will warn you or even abort a ride if anything abnormal is detected.

CAROL’s maximum intensity sprint workouts have been carefully designed and tested by scientists to give you enough time to recover so your blood pressure and metabolism normalise again after pushing to your intensity limits.

You’re in safe hands as you go all-out for maximum results on a CAROL bike. The commercial-grade frame can withstand the highest forces and the freewheel clutch lets you safely perform explosive sprints with rapid acceleration and deceleration.

CAROL bike has an EEG heart rate monitor built into the handlebars

Designed with you in mind

Personalized design, personalized service

“The customer service for the Carol bike is the best, hands down, that I have ever experienced.” Jennifer Alphonse, United States

 

CAROL is the easiest, simplest exercise system on the planet.

Our workouts are suitable for any age and fitness level. CAROL has been designed with many features to keep you safe, and its short intense workouts are less strenuous than longer interval workout routines.

Whatever your workout goals, we can help you achieve them and offer personalised consultations with our customer success team as part of the service.

CAROL is a personalized AI-powered stationary bike

COMPARISON OF BIKES

Generations ahead of any other bike

Hardware

CAROL

HIIT Bike

Hardware

  • Commercial grade exercise bike

    Yes

    No

  • Certified highest accuracy ergometer

    Yes

    No

  • Silent belt drive

    Yes

    Yes

  • Frictionless eddy current brake

    Yes

    Yes

  • Freewheel safety clutch

    Yes

    No

  • Sensors for RPM and resistance level

    Yes

    Yes

  • Hand heart rate monitor

    Yes

    No

  • Touchscreen monitor

    Yes

    Yes

Software

CAROL

HIIT Bike

Software

  • Computer controlled brakes

    Yes

    Yes

  • Continuously personalized and optimised workouts

    Yes

    No

  • Precise fitness tracking

    Yes

    No

  • Safety algorithms

    Yes

    No

Exercises

CAROL

HIIT Bike

Exercises

  • Live streaming fitness classes

    Yes

    Yes

  • Live streaming racing content

    Yes

    No

  • Moderate-intensity continuous training (MICT)

    Yes

    Yes

  • Reduced exertion high intensity training (REHIT)

    Yes

    No

Further product specifications
  • Silent poly-V belt drive with freewheel clutch, 1:4.9 gearing ratio and 14kg flywheel
  • Mains powered (110-240V)
  • Ergonomically sculptured comfortable saddle
  • Dual sided toe cage & SPD click pedals
  • Bluetooth connectivity for headphones and heart rate monitors
  • Max user weight 130kg/286.6lbs
  • Product weight (assembled) 59kg/130lbs
  • Product length 116cm/45½”, width 56cm/22”