Improve your fitness by 12% in just 8 weeks.

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

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

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

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

How CAROL Bike’s short, effective workouts deplete muscle glycogen—and improve aerobic capacity.

CAROL CEO and co-founder, Ulrich Dempfle, unpacks CAROL's science.

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

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

Improve and protect heart health through the shortest, most effective workouts.

Discover the unique capabilities of CAROL Bike that make it the only choice for REHIT, offering optimal, personalized high-intensity workouts.

The shortest, most effective cardio workout just got even shorter.

From maximizing calorie burn to sprint duration—get more from your cardio.

Explore the unique features that set the CAROL exercise bike apart from traditional stationary bikes—to deliver an unparalleled workout experience.

Boost your workout with breathwork

REHIT: The shortest, most effective workout. Backed by science.

Learn how exercise can boost your mental health and well-being with the latest scientific research.

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

Explore the diverse, scientifically-backed workouts offered by CAROL Bike, including REHIT and Fat Burn.

HIIT provides all the benefits of regular training—in half the time.

Build an efficient and lasting weight management strategy.

The benefits of these low-impact cardio workouts depend on effort.

Understand how to burn fat effectively with cardio exercise.

The intensity and duration you can maintain longest determines results.

Proven methods for increasing VO₂max—the key measure of cardio fitness.

Groundbreaking research challenges the 'more is better' belief.

Make your home training more efficient with these home gym machines.

EPOC can help accelerate your post-workout metabolism, making it a powerful tool for managing your weight.

Assemble the perfect setup for your bike and get maximum results from your workouts.

Increase fitness from the comfort of your home with these effective cardio exercises.

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

Discover the scientifically proven health benefits of HIIT bike workouts.

10 home leg workouts scientifically proven to deliver results.

Regular physical activity activates immune mechanisms and decreases risk of illness.

Keep active indoors with the best cardio exercises for achieving results at home.

Adjust your lifestyle for long-term belly fat loss.

Transform your fitness with strength training: benefits, strategies, and timing.

Enhance your joint range and reap surprising health benefits.

Understand the vital role cardio plays in overall fitness.

Running and cycling are the most popular cardio activities for weight loss.

Get fit with exercise snacking: Quick, 1-minute workouts for improved fitness and health.

Discover how regular cardio training can help decrease your resting heart rate.

Enhance skin elasticity to prevent loose skin after weight loss.

Cycling offers gender-specific benefits for women's health and wellbeing.

Cycling activates major muscle groups of the lower and upper body, improving fitness and preventing injuries.

Discover effective strategies for shedding excess weight and staying healthy after the age of 40.

Unlock the power of aerobic and anaerobic energy systems in your training.

Achieving lasting results demands a committed, long-term fat-burning strategy.

Dive deep into the efficiency of air bikes for power-packed full-body cardio workouts.

Delve into a comprehensive comparison between CAROL Bike and the Sunny Exercise Bike.

Active recovery helps your body regenerate faster after training.

Jumpstart your fitness journey with this 4-week weight loss exercise plan designed for home workouts.

Recent research challenges age-related metabolic assumptions.

Enhance the efficiency of your cycling regimen with these 8 transformative HIIT cycling workouts.

Research shows that weight loss drugs like Ozempic work best when combined with regular exercise.

Rowing and indoor cycling are both great options for cardio fitness, but how do you decide which one is the best fit for you?

This type of workout may significantly improve your body composition and performance.

Enhance your lung capacity through interval training and targeted breathing exercises.