Time to thrive

Lack of time is the number one reason why most of us don’t exercise enough. Reduced Exertion HIIT (REHIT) was developed by scientists in search of the shortest, most effective method to exercise to overcome this barrier.

REHIT creates the most potent training stimulus with just 2×20-second sprints. It’s scientifically proven to deliver superior health and fitness benefits compared to normal exercise—requiring only 15 minutes instead of 2.5 hours per week, recommended in government guidelines.

With just 3×5-minute workouts per week, REHIT on CAROL has been shown to improve your cardiorespiratory fitness (VO₂max) by 12% and reduce your risk of developing metabolic diseases by 62% in only 8 weeks.

Weekly cardio, two ways

What the week actually costs you

REHIT on CAROLGovernment guidelinesThe difference

15 mina week — 3 × 5-minute workouts, and the fitness and health markers still move.

150 mina week of moderate activity, the standard recommendation REHIT is measured against.

2 hrs 15given back every week — the reason lack of time stops being the reason.

Same eight weeks, same measured outcomes: VO₂max up 12%, metabolic disease risk down 62%.

Reclaim your health and fitness, transform your body, and turn the clock back on aging with CAROL Bike—making every moment mean more.