Sean Johnson

Owner / Personal Trainer / Nutritionist

Fellow of National Board of Fitness Examiners

Internationally Certified with ISSA

Nationally Certified with NASM, ACSM, ACE, AFTA, APEX

J-Range Method Founder

Specialist in Performance Nutrition, Exercise Therapy Specialist, Performance Enhancement Specialist, Corrective Exercise Specialist, Nutritionist

Director of Rehab Services

I have dedicated much of my time studying and 
researching -- attempting to make sense of everything. My goal is always to give people hope when 
they feel there is none. My research has a direct compassion attached to it (with a lot of sympathy), 
while always attempting to find the hidden truth behind all of the chaos.





More about Sean...

At the ripe old age of 16 I was almost bedridden with back pain to which the back specialist finally gave me a diagnosis of degenerative disc disease where seven of my discs were over halfway gone. He said my back was the equivalent to an 80 year old's.

This is where my passion comes in. I have spent my life researching and helping others prevent pain while accomplishing goals they never dreamed were still possible. 

I was told no matter what I did that I would be paralyzed from the neck down by the age of 30. I am now 36 without pain most of the time all without medication or surgeries. 

This has given me the passion and the knowledge needed to help people get to their goals even when they first believe it isn't possible anymore.

 In the industry...


Sean Johnson is the sole owner of JRT Fit, a private personal training club in Littleton, Colorado, where he provides industry-leading approaches to injury prevention and post-rehabilitation exercise. As a mentor to other trainers, he teaches and encourages scientific inquiry as well as best practices for effective, low-cost marketing. Sean has been a personal trainer for over 18 years and has 8 current certifications with specialties in Fitness Therapy, Performance Nutrition, Corrective Exercise, and Performance Enhancement. He has held previous certifications with ACE, ACSM, and AFTA.

Prior to establishing JRT Fit, Sean served as Director of Rehabilitation Services for Foothills Chiropractic & Wellness in the south Denver metro area. His clients have included athletes, doctors, physical therapists, and other trainers. Sean started in the industry by training at numerous area gyms including Life Time Fitness, Bally Total Fitness, Club USA, and 24 Hour Fitness before taking on his first co-ownership and management role in 2001 at BodyWerx, a private membership and personal training club in Littleton.