Monday, April 1, 2019

The Power of the kBox: The Best Fitness Equipment I’ve Ever Used

As a personal trainer with years of experience in the industry, I’ve come across almost every piece of fitness equipment you can imagine. Some that are amazing such as the VersaClimber and many more that failed to make the cut. The latter usually find their way out when sales dry up. To be blunt: It’s hard to impress me with a new piece of fit gear.

I was genuinely surprised when I found the kBox. It didn’t look like much, but after one workout, I was hooked. Let me take you through what the kBox is, the benefits you can expect, and my personal experience using it with my clients and during my own workouts.

What is the kBox?

When you first see the kBox, you’re immediately going to wonder what it does; after all, it just looks like a big box with a wheel in the front. The kBox is based on flywheel training, making it ideal for a variety of different types of training including strength building, muscle hypertrophy, and sports conditioning. 

How Does the KBox Work?

Flywheel training is when the user of the machine (you!) generates his or her own resistance by working against the inertia of the flywheel, not against gravity like with traditional weightlifting. In other words, the resistance is coming from the flywheel itself, pulling you back to the starting point. 

Attached to the flywheel, you’ll pull up, the wheel will spin, and you’ll have to fight against the returning resistance, creating an insane amount of eccentric load. Several studies have found flywheel training to be superior to traditional barbells as far as results and injury prevention. (1)

Benefits of kBox

Speaking of studies, let’s dive into the proven benefits of the kBox:

Unique Challenge: I guarantee you won’t find a workout quite like this. It might take a few minutes to get used to, but the kBox provides an incredible challenge, demanding the most from your muscles. It might not seem like you’re doing much – after all, there’s no barbell on your back or dumbbell at your side – but your muscles will quickly let you know that you’re doing a hell of a lot.

Variety of Exercises:I’ll admit that when I first saw the kBox, I had my doubts as to whether you could perform many exercises. I was definitely wrong. You can perform all of your favorite exercises including squats and lunges. Not just the standard squat or lunge – You can do split squats, sumo squats, side lunges, and reverse lunges. These are just a few examples of the upper, lower, and total body exercises that you can do. There are literally dozens that you can do.

Tracks Your Workouts:One of my favorite features of the kBox is the kMeter, which is an app-based wireless feedback system that provides you with real-time feedback on your workouts. It’s not some universal fitness tracker; the kMeter was built to link directly to the kBox, giving you incredibly accurate readouts.

No Noise: Sometimes my days are busy and I’m not able to get in a workout until well after everyone else in my house has gone to bed. Despite providing an insane full-body workout, the kBox is eerily quiet. Seriously, you won’t hear a peep from this thing.

Easy to Carry and Store: I offer off-site personal training, so I need equipment that I can pack up and take with me. When I first saw the kBox, I assumed that it weighed a ton. Not the case at all. The model I purchased – the kBox4 – weighs a bit more than thirty pounds, which is probably less than most of you carry around with the dumbbells you use. They also offer a different version that weighs half of this!

Try Before You Buy:Even with all of the features of the kBox, I only wanted to try it to make sure it wasn’t a one-time love affair. Thankfully, the company, Exxentric has set up plenty of locations around the country, allowing you to experience flywheel training for yourself.

kBox Review: My Experience with kBox

I personally use the kBox as much as my clients do. First, let’s talk about my workouts:

I tend to enjoy power-focused workouts such as crawling, and the kBox is perfect for this. Since you’re in control of the resistance, you won’t believe the power you can generate on this thing. Power-focused training can help to build muscle and burn fat, but most importantly, it’ll take your athletic performance through the roof. Since I started using the kBox, I’ve noticed gigantic improvements in my jump squats and sprints.

I like to mix up my kBox workouts. During the week, I’ll alternate between upper, lower, and total body workouts. My favorite exercises on it are the kettlebell swing, the deadlift, and, of course, the squat. One of the things I love about the kBox is that it can take old exercises and breathe new life into them. I’ve done literally thousands of barbell squats, but the first kBox squat I did felt like it woke up muscles I’ve never used before.

I also take part in group exercise classes, and before each class, I use the kBox to prime myself. Every single time I’ve used the kBox to warmup, my power output has surpassed everyone else’s by 100 to 150 points.

With my clients, I’ve found the kBox to be ideal for improving strength, power, and overall fitness ability without the risk that comes with using barbells and dumbbells. My elderly clients or those going through rehab love the kBox since they can control the challenge. Best of all, there’s no compression from barbells on your back. Even my fittest clients get a world class workout with it. Check out one of my rock star clients performing a deadlift on the kBox.

Have You Tried the kBox?

What did you think about it? Curious about using the kBox? Have questions about how to get started? Let me know in the comments below!


1. Vicens-Bordas J, Esteve E, Fort-Vanmeerhaeghe A, Bandholm T, Thorborg K. Is inertial flywheel resistance training superior to gravity-dependent resistance training in improving muscle strength? A systematic review with meta-analyses. J Sci Med Sport. 2018 Jan;21(1):75-83. doi: 10.1016/j.jsams.2017.10.006. Epub 2017 Oct 18.