Coach Katrina

Achieving good health and fitness doesn’t happen overnight. Similarly, it doesn’t happen without a steadfast commitment to healthy eating and regular exercise. Thankfully, good health and wellness is possible with the right guidance and support. 
As a certified health coach, personal trainer, and owner of MixFit, I enjoy helping members improve their health, fitness, and well-being in a fun, friendly and focused environment.   
Like many of our members, I understand the struggle of today’s busy lifestyle. I’m a working mother of six with more than two decades of experience navigating the challenges that come with balancing family, work, and wellness. 

While I make meal planning and exercise a priority, that wasn’t always the case. In fact, there was a time when I fed my family whatever was quick and easy at the end of the day. All that changed in 2003, when one of my twin daughters was born with gastrointestinal issues. Determined to help her in every way possible, I went back to school to study nutrition. That charted a new course for me, both personally and professionally.
As I began incorporating what I was learning about the virtues of eating healthy, nutrient-rich foods and staying active, I quickly discovered that the benefits extend far beyond physical health. Countless clinical studies and my own personal experience show that eating well and exercising regularly can also greatly improve our mental health and overall quality of life.

After over a decade of living by the principles of good nutrition and exercise, I discovered a passion for teaching and training others. I once again returned to the classroom, becoming a certified personal trainer from the American Council on Exercise in 2013. 
As a coach and trainer at MixFit, I encourage members to make meaningful changes in their daily diet and exercise routines aimed at improving their health and well-being. I freely share my knowledge of food and nutrition, and I’m often quoted as saying, “If it didn’t have a mother or come out of the ground, then you shouldn’t eat it.” 

Dispelling the myth that ‘those who can’t do teach’, I do my best to lead by example and participate in the MIXFIT workouts daily. Our members inspire me every day to practice what I preach and remind me that we are never too old to make positive changes in our lives. WE CAN GET STRONGER every day!

ACE Certified Personal Trainer
PN Exercise Nutrition Certified
CPR/ First Aid
BS Science

Coach John

John Wilcox joins the MIXFIT Team with an extensive background in fitness. Originally from New Hampshire, he received two B.S. degrees from Plymouth State University in Exercise Science and Fitness and Rehabilitation. John has trained Olympic and professional athletes, youth sports teams and clients at every fitness level from ages 6 to 90. He is known for his calm demeanor, attention to detail and effective workouts.

Coach Bret

Coach Bret Nelson is new to the Phoenix area, originally from Boston Massachusetts, he comes to us from San Diego California where he was the head trainer at Boulevard fitness from 2015 to August 2018. He is a retired greenside FMF Corpsman, who completed 2 tours in Fallujah Iraq. A life long boxer, he was on the Navy’s Olympic team from 2003 – 2006.  Coach Bret brings his unique coaching and boxing skills to MIXFIT and has helped us introduce a brand new Boxing program that has been a huge success.

Bret holds certifications from NSAM ( National Academy of Sports Medicine) in:

  • CPT – Certified Personal Trainer
  • PES – Performance Enhancement Specialist
  • CES – Corrective Exercise Specialist
  • WLS – Weight Loss Specialist
  • FNS – Food and Nutrition Specialist

Coach Bob

After more than 30 years of yo-yo diets and ineffective exercise programs, I discovered what has always been true; The secret to health and fitness success is good nutrition and a consistent exercise. As a middle-aged man, I speak from experience when I say that maintaining our health, fitness as we age requires constant effort, energy, and dedication. 
Beyond daily strength and endurance training, my personal exercise routine includes long-distance and trail running, hiking, taking part in fitness events like mud runs and obstacle races, and incorporating yoga from time to time. My commitment to exercise is matched by my focus on healthy nutrition. I subscribe to a predominately paleo diet of lean meats, fruits, vegetables and nuts with little as little sugars, starch and dairy as possible. 
Like you, I’m not immune to the health hazards of my genetics. I’m a two-time cancer survivor. I attribute my ability to beat cancer – twice – and maintain an active lifestyle to my unwavering commitment to exercise and healthy eating. In fact, my personal health history is what led me to become a fitness coach. 
My coaching background includes training in a boot camp-like environment. More specifically, I have years of experience designing and leading timed circuit-training routines that move participants from station to station with the goal of increasing strength, endurance, and flexibility. 
As an owner and coach at MixFit, I continue to develop workout routines that help members increase muscle mass and strength, foster greater flexibility and agility, and improve endurance.

Coach Erica – Yoga Instructor

From my first session over ten years ago, the practice of yoga has been changing my life in ways that I would have never imagined. Truthfully when I first started I hated it. I found its requirement to find stillness and sanctity on the mat to be utterly impossible. Little did I know that it would become exactly what I needed in my chaotic and demanding life.

As a mother, therapist and Veteran I find that Yoga allows me the space to reconnect, recharge and rejuvenate myself in order to accomplish my next task. It not only compliments those areas of my life, but it also helps me to find balance as a triathlete, marathon runner and self-proclaimed cross-fit enthusiast.

After years on the mat as a student across the US and abroad, I finally decided to take my next step and became a yoga teacher through a 200 hour Yoga Alliance training. I completed my training at my own personal studio, Urban Yoga. I have since been volunteering my time to fellow Veterans at the VA Hospital and partnering with the local High School social worker to begin a yoga club to teach students as well as faculty.

In my classes, I like to combine stretching, strengthening and a dose of inspiration to help students deepen their own practice. My hope is to help students learn to be present on the mat but also long after they step off as they carry this sense of stillness into their daily lives. It is an honor to take the seat of the teacher as I look forward to spreading the benefits yoga has brought to my life.

The light within me humbly bows to the light within you.
With gratitude. Namaste!

Substitute Coach Anthony

Coach Anthony is a graduate of the University of Arizona with degrees in Dance and Education. Anthony is a fitness and health enthusiast, who aside from coaching at MIXFIT from time to time, also teaches dance and fitness at multiple locations.


Crossfit L1
CPR/ First Aid