Comfortable Being Uncomfortable: Why an Air Force Pilot Chose Jiu Jitsu

JR doesn’t walk into the academy trying to be the toughest guy in the room.

He’s a career military pilot—an Air Force Lieutenant Colonel—so he’s spent years training in an environment where the right mindset isn’t “dominate,” it’s “prepare.” Aviation is defensive by nature. A lot can go wrong, and you don’t get to improvise your way out of it. You build systems, you run checklists, you learn to stay calm when your body wants to spike.

When JR started Brazilian Jiu Jitsu at Houzn Jiu Jitsu Academy about two years ago, he felt that same parallel immediately. Not in the Hollywood “fight” way. In the real way.

You protect yourself. You manage risk. You think clearly under pressure. You make small decisions that keep you safe—and you stack those decisions until they become skill.

That’s the version of Jiu Jitsu beginners deserve to hear about.

Because from the outside, people think Jiu Jitsu is just learning how to fight. JR will tell you it couldn’t be further from the truth. Jiu Jitsu is a lot more than that.

The first uncomfortable moment (and why it matters)

Most people who are curious about jiu jitsu for beginners and advanced levels have the same quiet fear: “What if I look dumb?”

They might not say it like that. They’ll say they’re out of shape. They’ll say they’re too old. They’ll say their schedule is crazy. But underneath it is a fear of being exposed as a beginner in public.

JR understands that feeling more than you’d expect from someone with his resume. When you’re a Lieutenant Colonel, people assume you’re confident all the time. When you’re a pilot, people assume you don’t get nervous.

But beginning anything again resets you back to reality.

At Houzn, JR stepped into the same learning curve everybody does. New grips. New vocabulary. New positions where you don’t get to “muscle through.” Moments where your brain says, “This is too much.”

JR’s move in those moments is simple, and it’s the kind of mindset that keeps people training long enough to actually change.

He gets comfortable being uncomfortable.

There are positions where he’ll literally tell his brain, “I can do this.”

That’s not motivational poster talk. That’s self-regulation. It’s what a trained professional does when the stress response rises: you bring your attention back to what’s controllable. You breathe. You make the next best decision.

On the mat, that might mean framing correctly, recovering guard, or simply surviving long enough to learn what the position is asking you to fix.

Why the “defensive” mindset builds confidence (not fear)

JR says military training is very defensive in nature. That doesn’t mean you’re timid. It means you respect reality. You don’t assume everything will go perfectly. You prepare for the fact that it won’t.

That mindset is a perfect fit for Brazilian Jiu Jitsu, especially if you’re a beginner. Jiu Jitsu rewards people who can stay calm and build structure.

You don’t need to be aggressive to train. You need to be present.

At Houzn Jiu Jitsu Academy, you’ll see that in how people roll. Good training partners aren’t trying to “win practice.” They’re trying to get better without injuring each other. They’re learning control, timing, and awareness.

That’s why JR’s current definition of success is so grounded: he wants to continue to train by avoiding injuries.

That’s not a small goal. That’s the goal that makes every other goal possible.

The moving goalpost: how JR measures progress

If you ask JR what he’s chasing in Jiu Jitsu, he doesn’t talk about being the best in the room. He talks about hitting finite goals, then moving to the next.

His goalpost is always changing because he keeps reaching what’s right in front of him. He believes in keeping playing the game to make progress—just like when he started being a pilot and learned to fly an aircraft.

Focus on one thing. Hit the goal. Then move to the next thing.

That’s how real skill is built.

For beginners, this is one of the most helpful ways to think about training. Jiu Jitsu can feel huge at first. There are so many techniques and so many ways to get stuck. If you try to “learn it all,” you’ll feel overwhelmed and quit.

But if you pick one small target, progress becomes predictable.

This month it might be learning how to breathe and survive in side control. Next month it might be one guard pass. Then maybe it’s one clean escape you can hit on people your level.

That’s also why rank in Jiu Jitsu means something. It represents accumulated problem-solving. It reflects time spent choosing the hard thing and coming back anyway.

Effort over winning: the identity shift that keeps you training

JR believes having the focus on effort is more important than winning.

That’s a big deal, because most adults carry an invisible scoreboard everywhere they go. If they don’t do well quickly, they assume it’s not for them. If they struggle early, they interpret it as failure.

JR flips that. In his mind, frustration is part of the learning process. Failure is the first step to mastery of anything you do.

That’s not just a “positive attitude.” It’s an effective way to stay consistent.

In psychology terms, focusing on effort builds internal control. You stop depending on outcomes you can’t fully control—like who you get paired with, how strong someone is, or how much sleep you got—and you start owning the behaviors that actually create progress.

You show up. You listen. You try. You learn. You take care of your body. You ask questions. You build momentum.

That’s how people change.

“Always treat your opponents with respect”

There’s another lesson JR repeats that fits Houzn’s culture perfectly: “Always treat your opponents with respect.”

He says it because he’s seen it firsthand. You’ll see people who seem weak being savages on the mat. You’ll also see people who are super fit and ripped having no idea what they’re doing.

Jiu Jitsu has a way of stripping away assumptions.

JR doesn’t limit the word “opponent” to the mat, either. He talks about opponents as the person across from you in training, or the coworker you’re dealing with at work. Never underestimate people. Don’t judge a book by its cover.

Professionally, that’s become part of his definition of success: opening his perspective to see what people under him are capable of.

That’s leadership rooted in humility, and it’s one of the reasons he’s such a steady teammate. At Houzn Jiu Jitsu Academy, respect isn’t a slogan. It’s how you keep the room safe and productive.

Family, routine, and why community is the real “secret weapon”

JR is a family guy. Married. One child. And one of the coolest parts of his story is that Jiu Jitsu isn’t something that pulls him away from his family—it’s something that brings them closer.

His six-year-old son trains at Houzn in the Young Warriors Program twice a week.

If you’re a parent in Mount Pleasant, this matters. Because the barrier isn’t always motivation. It’s logistics. It’s, “How do I fit this into real life?”

For families from Park West, Old Village, Daniel Island, Carolina Park, Belle Hall, and I’On, having a place where both adults and kids can grow is a game changer. It turns training into a lifestyle instead of a guilty pleasure.

JR also loves the community aspect of Houzn. He describes being part of the community as being together with like-minded people who choose to challenge themselves and get comfortable in uncomfortable situations.

That’s a specific kind of tribe. Not loud. Not performative. Just people doing the work.

He talks about the bonding with teammates, and the simple truth that these people will have his back if he needs anything.

That’s not accidental. It’s built through shared reps, shared discomfort, and the kind of culture that values morality, truth, and personal responsibility—the stuff Houzn stands for.

And it shows up in the moments off the mat too: Father’s Day training with your kid, and the Christmas party at the end of the year where families come together and have a good time.

For beginners, those details matter because they answer the real question behind “Is this gym good?”

The real question is, “Will I belong here?”

JR, the teacher: the infinite game

JR says he’s a teacher at his core.

He loves teaching young pilots how to fly. And he talks about an “infinite goal” of teaching Jiu Jitsu one day—after he earns his black belt. He mentions The Infinite Game by Simon Sinek, and it fits his approach perfectly.

In an infinite game, you don’t play to finish. You play to keep playing.

That’s how you train for a lifetime.

It’s also why Houzn’s approach resonates with so many different people. Some students compete. Some train for self-defense. Some train for stress relief and discipline. Some train because they want to be the kind of person who doesn’t quit when things get hard.

Different goals. Same direction: self-mastery.

What beginners can take from JR’s story (without needing JR’s background)

You don’t have to be a pilot to train like JR.

You can borrow the parts that matter.

You can start with a defensive mindset, not an ego mindset. You can aim for effort, not perfection. You can expect frustration and treat it like tuition. You can respect the person in front of you. You can build small goals that stack into real progress.

And you can choose an academy where the culture supports that.

If you’re new and you’re reading this, here’s the honest truth: you’re not supposed to feel ready. You’re supposed to feel curious. That’s enough.

Train with us in Mount Pleasant (try 1–2 classes)

If JR’s story feels relatable—busy life, high responsibility, family routine, and a desire to keep growing—come train with us at Houzn Jiu Jitsu Academy.

We’re in Mount Pleasant, SC, and we serve students and families from Park West, Old Village, Daniel Island, Carolina Park, Belle Hall, and I’On. We offer jiu jitsu for beginners and advanced levels, and we’ll help you find the right starting point.

If you’re in Mount Pleasant, book a trial class. If you want help picking the right class, send us a message and we’ll guide you. If you’re already part of the Houzn community, drop a comment and share one thing you’ve learned from JR as a teammate.

Follow Houzn for more student stories and a clear look at what Brazilian Jiu Jitsu looks like when it’s taught with discipline, respect, and real community.

The Mat as a Mirror: How Tech CRO Michael Rentz Found Balance, Humility, and Community at Houzn Jiu Jitsu Academy

If you step onto the mats at Houzn Jiu Jitsu Academy on any given evening, you might find yourself sharing a round with Michael Rentz. To the untrained eye, he is simply another dedicated practitioner moving with focused intent, adjusting his angles, and working through the complex physical chess of Brazilian Jiu Jitsu. But off the mats, Michael is the CRO of Gnosis Freight, a Charleston-based software company that has quietly become the industry leader in Container Lifecycle Management, helping track massive shipments across the globe. 

For a high-agency entrepreneur managing global supply chain solutions, the mental load can be immense. Yet, for Michael, the secret to navigating high-stakes business decisions does not lie in a new productivity app or a corporate retreat. It is found on the mat, damp with sweat, in the simple, uncompromising reality of training.

The Long Road to Mount Pleasant

Michael’s journey in Brazilian Jiu Jitsu began eight years ago in Rockaway, New Jersey. Under the guidance of respected martial artists Andy and Mike Main, Michael took his first steps into the sport, learning to navigate the uncomfortable early phases of being a beginner. 

During this era, a quiet thread of fate was already being spun. Houzn’s Head Professor, Rafaello Oliveira, was a rising mixed martial artist preparing for high-profile battles in the UFC. Professor Rafaello spent grueling training camps in Whippany, New Jersey, where he forged a deep, mutual respect and friendship with Andy Main. Decades of training, hundreds of miles, and entirely separate life paths would eventually converge right here in Mount Pleasant, South Carolina.

When Michael relocated to Charleston, Houzn Jiu Jitsu Academy did not exist yet. Eager to keep his training alive, he joined another local school, but something about the fit was not quite complete. When Houzn finally opened its doors, Michael did not jump ship immediately. Instead, he started attending the monthly Open Houzn events—our community-wide open mats designed to bring local practitioners together regardless of academy affiliation. 

For Michael, who was already a seasoned blue belt, these open mats were an eye-opener. He reconnected with friends who had already made Houzn their home. He felt the unique, ego-free culture of the academy, where safety, technical development, and mutual respect are prioritized above all else. After years of attending these open mats and experiencing the community firsthand, Michael made the official switch to become a full member of Houzn Jiu Jitsu Academy.

Why the Mats Don’t Lie

There is an inherent psychological honesty to Brazilian Jiu Jitsu that is hard to find anywhere else in modern life. In business, you can sometimes coast on momentum, reputation, or clever positioning. On the mat, however, the illusion of control quickly evaporates. 

Michael often speaks about how Jiu Jitsu serves as a microcosm of the macrocosm of life. The challenges you face during a sparring round—the panic of being pinned, the necessity of micro-adjustments, the demand for absolute presence—are identical to the pressures we face in our careers and personal lives. If you panic under pressure on the mat, you lose. If you panic under pressure in business, you lose. The mat trains you to breathe, analyze your options, and make a conscious decision when everything in your nervous system is screaming to escape.

This practice keeps even the most successful leaders deeply humble. Michael points out that the mats do not lie. One day you can feel like you have mastered the game, and the next day a new partner can come in and gently dismantle your entire defense. Embracing this reality requires setting your ego aside. At thirty-seven years old, Michael has embraced a mindset of walking his own path, consciously choosing never to compare his personal journey to anyone else’s. He trains for his own self-improvement, showing up to learn, grow, and enjoy the profound peace of a post-practice headspace.

Building Bridges in the Charleston Community

At Houzn Jiu Jitsu Academy, our mission is to build a vibrant community based on the principles of morality, truth, and personal responsibility. Michael Rentz embodies this mission both on and off the mat. 

Gnosis Freight, which was founded in 2017 and Michael plays an important role, started from a desire to deeply understand the critical pain points of the supply chain industry and solve them head-on. That exact same problem-solving spirit is why Gnosis Freight has stepped up for the second consecutive year to serve as one of the primary sponsors for the Houzn Jiu Jitsu Youth Competition Team. By investing in our youth, Michael and his company are helping the next generation of practitioners build discipline, confidence, and resilience.

Michael’s passion for movement and community did not stop with grappling. In 2024, he ventured into the world of striking, co-founding East Bay Boxing Club in Downtown Charleston. For Michael, whether it is grappling in Mount Pleasant or boxing downtown, the goal remains the same: creating spaces where people can challenge themselves, find accountability, and build genuine human connections.

Your Invitation to the Mat

Many people look at someone like Michael—a successful executive, co-founder, and experienced practitioner—and think that Jiu Jitsu is only for the naturally athletic or the highly disciplined. But everyone starts at the exact same place: day one. 

At Houzn Jiu Jitsu Academy, we specialize in providing high-quality jiu jitsu for beginners and advanced levels alike. We have built an environment specifically designed to lower the psychological barriers to entry. There are no egos here, no aggressive posturing, and no expectation for you to be in perfect shape before you walk through our doors. 

Whether you are looking to find a physical outlet that engages your mind, searching for a supportive community of like-minded professionals, or wanting to share a constructive lifestyle with your family, we welcome you. We serve families and individuals from all across Mount Pleasant, including Park West, Old Village, Daniel Island, Carolina Park, Belle Hall, and I’On.

You do not need to have it all figured out to start. You just need the willingness to step onto the mat and try one or two classes. 

Are you ready to see what you are capable of? Sign up for a trial class, or stop by the academy today to meet our coaches and experience our community firsthand. Your seat at the table—and your spot on the mat—is waiting.

From Tap-Out to Turnaround: John Good’s First Two Years at Houzn

Two years ago, John Good walked into Houzn Jiu Jitsu Academy in Mount Pleasant, SC with the same questions most beginners have: Am I too out of shape? Too busy with work and family? Too new to fit in?

John’s a bigger guy. In his first weeks of Brazilian Jiu Jitsu, he learned something fast: size helps—until it doesn’t. He still laughs about how quickly smaller teammates tapped him. Not in a mean way. In the respectful, “Welcome to the room” way that Jiu Jitsu does best.

That moment mattered because it gave him a choice. Protect the ego… or get better.

John chose better. He started showing up consistently, one class at a time. He asked questions. He listened. He let teammates coach him through the small details—breathing, posture, timing—then watched it add up. Day by day, he improved.

Outside the gym, the change went deeper than technique. John talks about how the Houzn community affected his work life and family life: real friendships, accountability, and a sense of connection that doesn’t end when class does. His mindset shifted from being focused on “stuff” to valuing what money can’t buy: work ethic, respect, confidence, and the kind of friendship earned through hard rounds.

The physical results followed: weight loss, healthier routines, and more energy. But the bigger win was identity—John became someone who trains. Someone who keeps promises to himself.

Today, John is a Blue Belt, and he gives back by helping Professor Rafa with Kids No-Gi classes twice a week—because he knows what it means when a beginner feels safe enough to try.

If you’re thinking about starting Brazilian Jiu Jitsu, you don’t need to be “ready.” You just need to show up once.

Want to try 1–2 classes? Visit the Trial Class page to book a trial class. Follow Houzn Jiu Jitsu on social media and tell us: What’s the one thing that’s been holding you back from starting?