707-224-2300 | 520 California Blvd, Napa, CA. 94559

Fitness Therapist

John Stewart - collage

John Stewart, MT, ET, FC


Sports Medicine Fitness Specialist
NASM Certified Master Trainer
NASM Certified Personal Trainer
NASM Certified Corrective Exercise Specialist
NASM Certified Performance Enhancement Specialist
NASM Certified Weight Loss Specialist
NASM Senior Fitness Specialist
NASM Youth Exercise Specialist
NASM Women’s Fitness Specialist

ISSA Certified Master Trainer
ISSA Certified Elite Trainer
ISSA Certified Fitness Therapist
ISSA Certified Personal Trainer
ISSA Certified Fitness Coach
ISSA Certified DNA Fitness Specialist
ISSA Certified Nutritionist
ISSA Certified Recovery Specialist
ISSA Senior Fitness Specialist

John has been in the fitness industry for over 20 years and is a Master Practitioner of Fitness Therapy and a specialist in Corrective Exercise, Performance Enhancement, Weight Loss, Senior Fitness, Youth Exercise, Women’s Fitness, and Personal Training. His education is through the National Academy of Sports Medicine as well as the International Sports Science Association.

The health and fitness world has changed immensely over recent years (or decades) and a much larger population is striving to stay active while feeling better and living longer, with less pain and/or limitation.  In response to this demand for service, John’s business model has changed, and he has partnered with Fusionetics for more modern and up to date training concepts for all ages and ability levels.

Training someone to first move properly is the foundation of any sustainable fitness program. Proper movement empowers ordinary people to stay active longer. Tight muscles, stiff joints and poor functional strength lead to impaired movement and damaging compensation. Movement impairment and compensation lead to pain, soreness, exercise dread—and eventually injury. This is especially true for adults and seniors who often shoulder a lifetime of accumulated traumas, strains, and chronic pain leading to unhealthy avoidance of activity and resultant weight gain.

Fusionetics programming, with proper physical training and therapy provided by a qualified practitioner like John, gives his facility the ability to precisely assess human movement and confidently create customized performance programs that can help clients move better, stay active longer, and lose weight.

His facility has quickly advanced, modernized, and customized its program to the point where it is safer and more effective than anything that came before.  Fusionetics has a platform that with his extensive training allows John, as fitness provider, to quickly assess the movement efficiency of any client—regardless of age or skill level—with pinpoint accuracy.

John also offers in-home therapy sessions upon request.

John has been through numerous injuries, illnesses, and recovery of his own. From torn pec muscles that required extensive surgery, to sprained spine injuries from a youthful career in powerlifting, to recovering from being struck by a car while cycling, to COVID and almost dying. John was told he would not survive multiple times, but courage and perseverance have always been driving factors. Recently, John has completed 2 SOLO marathons and an Ironman 70.3. He currently trains daily for longevity and other marathons and is always active and looking for better ways to serve his clients and community through healthy living and eating.