Scientifically-proven stationary bike workouts to get you fitter, faster.

CAROL Bike’s AI-personalized stationary bike workouts learn to push you to your limit, so every second matters. Developed with leading exercise researchers, every workout is scientifically proven.

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Your perfect indoor bike workout, backed by science.

Get fitter in less time. Improve your cardio fitness by 12% in just 8 weeks. CAROL Bike’s AI adapts every workout to your fitness level.

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

Lose weight. 66% of calorie-burning with CAROL happens after your workout, maximizing your metabolism.

Reduced Exertion HIIT (REHIT)

CAROL Bike’s signature stationary bike workout—the shortest, most effective cardio, in just 5 minutes.

Fat Burn

A time-efficient HIIT workout, proven to burn twice as many calories as regular exercise.

Free Rides

Take control of your training. Adjustable timing, intensity, resistance and target power.

Custom Rides

Sprint interval workouts backed by science, varying in duration and intensity.

Fitness Tests

Track your performance with tests that measure Functional Threshold Power and Maximum Aerobic Power.

Workout recommendations

Build your perfect regimen and reach your health and fitness goals faster.