About
At Jet Fitness, we transcend the traditional gym experience—we’re a thriving community dedicated to your holistic growth. Our foundation lies in the power of unity, cultivating a supportive environment where members inspire and uplift each other. Beyond the physical challenges, we believe in taking the lessons learned in our classes and applying them to all aspects of life. Jet Fitness is more than a physical test; it’s a mental journey where personal development is at the core of every triumph. Join us as we elevate not just your fitness but also your mindset.
We offer a range of high-energy boxing, kickboxing, and fitness classes designed to help you reach your fitness goals. Whether you’re looking to get in shape, learn new skills, or recover faster, we have everything you need to transform your fitness journey. Take the first step today and Try For Free—we’re here to help you succeed!
Our Story
…Up His Game.
Our Team
JJ “The Jet” Johnson
Founder/Personal Trainer
Jet Fitness was founded by head trainer & boxer, JJ “The Jet” Johnson. What initially began as a side project to help friends get in shape while supporting his boxing career, Justin has evolved Jet Fitness into a full-scale gym with a local and international clientele.
What makes Jet Fitness unique is the genuine companionship between the trainers and the clients, who are both invested in reaching each other’s goals and overcoming obstacles. In order to achieve a client’s goals, the duty of an elite trainer goes beyond what happens in the gym, it’s about making serious and dramatic lifestyle changes – this is the Jet Fitness mission.
Bobbie Plattenberg
General Manager and a Certified Personal Trainer
Hi, I’m Bobbie, General Manager and a Certified Personal Trainer at Jet Boxing & Fitness.
Before becoming part of the fitness industry, I served in the U.S. Army as a helicopter pilot. My time in the military taught me the importance of discipline, leadership, teamwork, and pushing through challenges—lessons that continue to influence the way I approach fitness, coaching, and life.
Today, I combine that experience with my passion for fitness, strength training, boxing, and helping others become the best version of themselves. As General Manager at Jet Boxing & Fitness, I get to be involved in nearly every part of the gym, from supporting our members and coaches to helping create an environment where people of all fitness levels feel welcome and challenged.
As a Certified Personal Trainer, I especially enjoy helping people realize that fitness doesn’t have to look the same for everyone. Whether your goal is to get stronger, improve your conditioning, lose weight, learn something new, or simply feel better, I believe in meeting you where you are and helping you keep moving forward.
For me, The Jet is more than a gym—it’s a community. I love seeing people walk through our doors, step outside their comfort zone, and discover just how strong and capable they really are.
Antonio Urista
Personal Trainer
Hi my name is Antonio Urista I’m a trainer at Jet Fitness.
At a very young age I developed a passion for fitness, from playing basketball to finding a place in boxing. With over 85 amateur fights, I became a professional boxer in 2013 to the present. I am goal driven, and with an extensive knowledge of the art. I enjoy sharing my expertise in the field and helping people reach their fitness goals.
Jose Prieto
Personal Trainer
Hello, I’m Joe Mendez, a personal trainer here at The Jet, a Marine Corps veteran, and the Executive Director and Head Coach of Gideon Boxing Gym in Saginaw.
My background in fitness and athletics comes from years of coaching, training, and developing people from the ground up. I’ve coached competitive boxers through local, regional, and national competition and have also served as an assistant varsity basketball coach at the high school level. Throughout my coaching career, I’ve worked with competitive athletes, complete beginners, and adults of all ages and fitness levels.
Boxing is my specialty, but you don’t have to be a boxer—or even consider yourself an athlete—to train with me.
My training approach focuses on functional strength, conditioning, mobility, coordination, and purposeful movement. I believe there’s a big difference between simply making someone tired and actually helping someone become stronger, move better, and improve.
My coaching philosophy is simple: coach the person, not just the workout. Whether your goal is to lose weight, build strength, improve conditioning, increase athletic performance, learn boxing, or simply feel better and more confident, we’ll start where you are and build from there.
Chris Cruz
Personal Trainer
Chris has been active in sports from a young age, participating in football, soccer, track, and cross country. In 2020, when the COVID-19 pandemic brought many sports and activities to a halt, Chris discovered a boxing gym and quickly fell in love with the sport.
What started as a new way to stay active grew into a passion for boxing and everything the sport represents. Through boxing, Chris developed greater confidence, discipline, and a drive to continually challenge himself.
Today, Chris is passionate about helping others experience those same benefits. He enjoys teaching the art of boxing, helping people improve their skills and fitness, and encouraging them to become more confident both inside and outside of the gym. Chris brings his athletic background, enthusiasm, and passion for helping others to the Jet Boxing & Fitness team.
Connor McDill
Coach
Hi, I’m Connor McDill, a coach at Jet Boxing & Fitness.
I grew up in the Metro Detroit area, where I developed my athletic background through wrestling. After moving to Lansing in 2022, I took my passion for combat sports to the next level and began training in MMA and Brazilian Jiu-Jitsu with Murcielago MMA and Magic BJJ.
I’m currently building my amateur MMA career with the goal of eventually turning professional. Competing has taught me the importance of discipline, consistency, mental toughness, and always being willing to learn.
One of my favorite things to do is train and continue leveling up my skills in MMA, BJJ, wrestling, and striking. I’m constantly looking for new techniques and ideas that I can bring back to my coaching and classes at The Jet.
As a coach, I enjoy helping people challenge themselves, improve their technique, build confidence, and get a great workout. Whether you’re brand new to combat sports or looking to take your skills and conditioning to another level, I want every class to give you something new to learn and a reason to keep pushing forward.
Riley Backus
Front Desk
Hi, I’m Riley, and I’m part of the team at Jet Boxing & Fitness.
Fitness has become my outlet for building discipline, finding balance, and challenging myself to become better every day. I spent 16 years competing in equestrian sports, and after working through multiple injuries and surgeries, I discovered boxing. Boxing gave me a new way to challenge myself, rebuild my strength, and reignite my passion for fitness.
Being part of Jet Boxing & Fitness gives me the opportunity to share that passion with others. I love supporting and encouraging people as they step outside their comfort zones, work toward their goals, and become stronger both physically and mentally.
Outside of Jet, I’m currently studying physiology at Lansing Community College with the goal of eventually attending medical school. My own experiences as a patient have inspired me to pursue a career where I can make a meaningful difference in the lives of others.
I also work as a server at Anna’s House, which has strengthened my communication skills and taught me the value of connecting with people from all different backgrounds.
Whether I’m at the gym, in the classroom, or at work, I want to encourage others, continue challenging myself, and keep growing into the best version of myself.
Joe Mendez
Personal Trainer
Hello, I’m Joe Mendez, a personal trainer here at The Jet, a Marine Corps veteran, and the Executive Director and Head Coach of Gideon Boxing Gym in Saginaw.
My background in fitness and athletics comes from years of coaching, training, and developing people from the ground up. I’ve coached competitive boxers through local, regional, and national competition and have also served as an assistant varsity basketball coach at the high school level. Throughout my coaching career, I’ve worked with competitive athletes, complete beginners, and adults of all ages and fitness levels.
Boxing is my specialty, but you don’t have to be a boxer—or even consider yourself an athlete—to train with me.
My training approach focuses on functional strength, conditioning, mobility, coordination, and purposeful movement. I believe there’s a big difference between simply making someone tired and actually helping someone become stronger, move better, and improve.
My coaching philosophy is simple: coach the person, not just the workout. Whether your goal is to lose weight, build strength, improve conditioning, increase athletic performance, learn boxing, or simply feel better and more confident, we’ll start where you are and build from there.