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CAROL Artificial Intelligence Biohacking Bike

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Your results, supported by science.

CAROL Bike was developed with leading exercise researchers to deliver the shortest, most effective workouts. The signature REHIT workout creates the most potent training stimulus with just 2x20-second sprints. It’s scientifically proven to deliver double the health and fitness benefits compared to normal exercise—in 10% of the time.


Workouts from just 5 minutes. Short, effective—easy to fit into your life.


AI-personalized with Instant Resistance—for double the health and fitness benefits in 10% of the time.


Developed with leading exercise scientists to give you the shortest, most effective workouts.

How the REHIT adaptation pathway works

CAROL’s AI-personalization and Instant Resistance help you push to your limits during the sprints. Like in a ‘fight or flight’ situation, your muscles are forced to mobilize about 25-30% of muscular glycogen—your emergency energy reserve—releasing key signalling molecules (AMPK and PGC-1a), telling your body it must get fitter and stronger.

You develop more mitochondria, your blood plasma volume increases, and your heart gets stronger. Resulting in increased aerobic and anaerobic capacity.

In only 2 or 3 days a week you will increase your VO2 Max and raise your metabolism. 
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