CAROL Bike gives you the shortest, most efficient workout—backed by science. It’s the world’s first home REHIT exercise bike. Delivering the same health and fitness results as a 45-minute run—in just 5. optimal health.

Get the most efficient workout in just 5 minutes with CAROL Bike - short and easy to fit into your life.

AI-personalized workouts tailored to you – simple to perform and suitable for any age and fitness level.

Scientifically proven to deliver superior health and fitness benefits in 90% less time compared to regular cardio.

Developed by leading scientists, Reduced Exertion HIIT (REHIT) is designed to provide the shortest, most efficient exercise workout. Just 2x20-second sprints create the most powerful training stimulus. With CAROL's AI-personalization making it suitable for any age and fitness level.

CAROL Bike is scientifically researched and proven to improve your fitness and health. Just 3x5-minute REHIT rides a week will improve your cardio fitness by 12% in just 8 weeks.

CAROL Bike offers all essential features to make REHIT easy, effective and safe. All components have been meticulously engineered to provide the optimal riding experience.

Just 2x20-second sprints, 3x a week. Scientifically-proven to be the most efficient cardio workout—a moment of effort you can always master.