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About
Our Story
Perfect Fit was founded by Brad Zajork in 2013, born from a personal journey of transformation. Brad’s passion for health and fitness started in high school athletics and continued as he played college football while earning his degree in Exercise Science. Despite his active lifestyle, Brad struggled with his weight—until one summer he decided to take full control of his health. By building a customized program for himself, he lost 70 pounds and experienced firsthand how physical change can impact every part of life—mentally, emotionally, and beyond.
That breakthrough became the foundation for Perfect Fit.
Brad started with one client at a time, tailoring each program with the same intention and precision he used for his own success. As demand grew, so did Perfect Fit. Within two years, it expanded to offer a wider range of services to the community—all rooted in the same belief: fitness must be personal to be sustainable.
“Fitness isn’t something you can work on once in a while. It has to be part of your life. Even now, I have to stay consistent with my own plan to stay healthy. It’s not always easy—but when you find your perfect fit, everything changes.”
– Brad Z.
Our Team
Brad Zajork
Owner/Fitness and Wellness Coach
Education: Bachelor Exercise Science​
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Brad Zajork is the owner of Perfect Fit in Mukwonago, where he's been helping people build healthier lives since 2012. With a degree in Exercise Science from Carroll University, Brad focuses on habit change and behavior-based strategies that create lasting results. He’s worked with clients of all ages and abilities, offering personal training that fits each individual’s goals and lifestyle.
At Perfect Fit, Brad has created more than just a place to work out—it’s a supportive space where people are encouraged to grow, challenge themselves, and make sustainable changes. His mission is to meet people where they’re at and help them move forward, one step at a time.
A proud dad and local business owner, Brad is deeply rooted in the community and passionate about making a real difference in people’s lives.
Brandy Langbecker
Functional Nutritionist/ Health Coach​
Education: Bachelor/ Master’s degree in Exercise Physiology, Certified Personal Trainer, NASM Corrective Exercise Specialist, ISSA Fitness Nutrition Specialist, and Functional Diagnostic Nutrition® Practitioner
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With over 25 years of experience in the health and fitness industry, Brandy is committed to helping individuals achieve long-term health and wellness. Specializing in weight loss, chronic disease management, exercise prescription, and lifestyle modification, Brandy takes a holistic, evidence-based approach to health. Her philosophy centers around making small, sustainable changes that lead to a lasting impact—empowering clients to take consistent steps toward better health, one habit at a time. By identifying root causes and tailoring solutions to each individual, Brandy helps people take control of their well-being and thrive for the long haul.
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Duy Zwiefelhofer
Yoga Instructor
Education: 500 -hour Registered Yoga Teacher
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Duy is a dedicated yoga instructor with a deep passion for promoting wellness and personal transformation through mindful movement. She began her yoga journey in 2011 and has been teaching since 2019. Duy completed her 500-hour Registered Yoga Teacher (RYT) certification through Yandara Yoga Institute and pursued an additional 300 hours of advanced training with renowned teacher Jason Crandell.
Duy’s classes blend Vinyasa flow with Yin and Restorative yoga, often concluding with gentle sound healing to encourage presence and inner peace. She emphasizes breathwork and mindfulness, creating a supportive environment where students can reconnect with their bodies and cultivate calm and clarity.
Outside the studio, Duy enjoys Argentine tango, hiking, traveling, and exploring the joy of learning new musical instruments.