The 5-minute cardiovascular anchor

Melini first discovered CAROL Bike at Midtown Biohack, a biohacking gym in New York City. She tried the bike, loved the experience and knew almost immediately that she wanted one at home.

But it wasn’t just the experience that convinced her. It was the science behind it.

“The science genuinely sold me. The mechanism is essentially a fight-or-flight response—and I see that immediately after if I am wearing a CGM.”

Before trying CAROL Bike, Melini had never heard of REHIT. The idea of achieving a high-intensity cardiovascular stimulus in just 5 minutes was new to her—and particularly appealing because she isn’t someone who naturally gravitates towards cardio.

“I’m not someone who enjoys running or biking,” she says. “So a protocol that gives me more in 5 minutes than I’d get from a long workout is perfect for me.”

Verified, not just felt

For Melini, the appeal of REHIT is its combination of efficiency and measurable impact. She was particularly interested in CAROL’s research around VO₂max—a key measure of cardiorespiratory fitness and an important marker of overall health and longevity.

And because her CAROL Bike is at home, fitting cardiovascular training into her week became much easier.

“There are no excuses when the workout is at home and only takes 5 minutes.”

Almost a year into riding, Melini has seen marked changes in her VO₂max.

“My VO₂max has improved significantly. It’s been measured when I get tested by my doctor.”

That progress has made CAROL Bike the cardiovascular foundation around which she builds the rest of her training.

“My CAROL workouts have become the cardiovascular anchor of my week.”

One bike, alongside everything else

Melini combines her CAROL workouts with longer Zone 2 walks, weight training, EMS training, yoga and pilates.

But CAROL plays a particular role: delivering a focused cardiovascular stimulus without demanding a large amount of time.

“CAROL is the piece that delivers the most in the least amount of time.”

For Melini, that efficiency is what makes it so easy to keep CAROL in her routine—and to keep making progress alongside everything else she enjoys.

Favored by the whole household

When it comes to CAROL’s workouts, Melini has a clear favorite: the signature REHIT Intense workout.

“The 5-minute REHIT workouts with the Tiger chasing me is my favorite, I pick that every time.”

And Melini’s CAROL journey hasn’t been hers alone.

“My husband was skeptical; he’s someone who loves long rides outside and now CAROL workouts are his favorite too.”

Her advice to anyone considering CAROL?

“Do it. The investment is completely worth it, and it’s an investment for your whole household.”

Start your 100-day risk-free CAROL Bike trial now.