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Improve your cardio by 12% in just 8 weeks.

1 min read

Discover the scientifically proven health benefits of HIIT bike workouts.

10 min read

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

2 min read

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

2 min read

Improving your VO₂max by 12% is like turning your body clock back 10 years.

1 min read

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

1 min read

How CAROL’s REHIT Workouts Increase VO₂max to Promote Life Longevity

How CAROL’s REHIT Exercises Increase VO₂max to Promote Life Longevity

5 min read

Everything you need to know about CAROL and muscle glycogen

The shortest, most efficient way to improve aerobic capacity.

6 min read