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CAROL Bike Review: How AI Cardio Delivers Fitness in Just 5 Minutes

The CAROL Bike is an AI-personalised exercise bike that uses science-backed REHIT (Reduced Exertion High-Intensity Training) to provide the health and fitness benefits of a 45-minute workout in just five minutes.

Medical Daily · Nov 13, 2025

Makers of this AI powered bike claim you can get fit in under nine minutes a day — we put it to the test

Dedicated cyclists often consider an hour the threshold for a successful indoor training session — but could the reality be much, much quicker?

Cycling Weekly · Oct 22, 2024

I tried the CAROL Bike's AI-powered workouts —here's what happened

The CAROL Bike's AI-backed resistance system, combined with the company's efficient training techniques, means you can boost your fitness in less than 10 minutes. Here's what it was like in practice.

Tom’s Guide · Jul 4, 2024