The Core Fitness Team:

Core Fitness Chicago is dedicated to raising the standard of information in the health and fitness industry. To achieve this goal we MUST find and develop passionate practitioners that dedicate their professonal career to learning the most advanced techniques the fields of strength & conditioning, rehabilitation and wholistic kinesiology have to offer. Each of our staff members has unique backgrounds, passions and areas of expertise. To learn more about our staff please read their biography's and see why our cilents belive this is the best staff in Chicago.

Dusten Nelson

Brian McCabe

Travis Burkybile

Ginger Vulchev

Cortez Cross

Devon Liebl

Tim Cleveland

Doug Jones

Dusten Nelson: President

(B.S, M.A, PICP Level 3, Biosignature Modulation Level 2, Fascial Stretching Therapist Level 2,

Certified Wholistic Kinesiologist, HTMA Level 2, C.H.E.K Level 1, Certified Performance Taper, MSTOM Candidate.)

Since 2002 Dusten has dedicated his professional career to the development of Core Fitness Chicago LLC, a rapidly growing health and fitness company specializing in body composition change, instant muscle strengthening techniques and Wholistic Kinesiology

The Chicago based company has a simple mission, raise the standard of information in the health and fitness industry. This mission appears to resonate with clients as Core Fitness continues to grow year after year. The overwhelming support from Core Fitness’s clients has forced this growing company to continually expand their products, services, and offerings to meet the ever growing demand.

Dusten believes the reason for the success is simple, Core Fitness has assembled team of passionate professionals who genuinely care about the client. "We provide the staff with the best information available, and provide clients unparalleled programs and services at an affordable rate."

In the past 11 years Dusten has learned from some of the best and brightest instructors in the health and fitness industry. After completing a certification with the C.H.E.K. Institute (Corrective Holistic Exercise Kinesiology) in Encinetas, California where he learned advanced orthopedic assessment techniques, exercise program design and physiological load assessment techniques, Dusten spent a year earning certifications in nutrition as a level 2 Advance Metabolic Typing Advisor (CMTA 2) and Hair Tissue Mineral Analysis (H.T.M.A) with the Metabolic Typing Center in La Jolla, California.

Dusten then sought out world-renowned strength coach Charles Poliquin, spending time each of the past 7 years learning with the Poliquin International Strength Institute in Rhode Island earning Level 3 PICP, Level 2 Biosignature Modulation and P.I.M.S.T certifications in the Poliquin International Certification Program.

To his credit, coach Poliquin has also introduced Dusten to a number of phenomenal systems and mentors out of the P.I.C.P. system. At Coach Poliquin's recommendation, Dusten  spent six months studying with Dr. J. Dunn, founder of the Wholistic Kinesiology Institute in Albuquerque, New Mexico to become a Certified Wholistic Kinesiologist (CWK) and recenlty earned a Level 2 certification as a fascial stretch therapist with Anne & Kris Fredricks at the Stretch To Win Institute in Tempe, Arizona.   

Dusten is currently pursuing a Masters of  Science of Traditional Oriental Medicine (MSTOM) degree at Pacific College in Chicago and is looking forward to continuing his education and improving the client experience at Core Fitness Chicago.

In his down time Dusten enjoys spending time with family, watching sports and movies. He also enjoy traveling, Dusten recently spent time in Pamplona, Spain where he participated in the “Running of the Bulls” during la Fiesta de San Fermine.

Contact Dusten:

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Brian McCabe: Director of New Business Development & Strength Coach

(N.A.S.M., ALA, Certified Performance Taper, CPR)

Brian joined Core Fitness Chicago in 2006 with certification through the National Academy of Sports Medicine (N.A.S.M).
Brian has focused his educational development on Corrective High-Performance Exercise Kinesiology (C.H.E.K.) training system, focusing on restoring strength, stability and postural alignment. Improving orthopedic dysfunction, restoring strength, stability and postural alignment.
Brian has successfully helped clients in all walks of life achieve their goals by combining an unparallel information system with an infectious personal energy that motivates everyone.

In addition to working with his personal clients, Brian also recruits additional strength coaches and assists them with their over-all development. He was also instrumental in the development of the popular “Train Like Jane” and "Primal” small group training programs.
Brian has 14 years of experience in muscular development and has proudly competed in natural bodybuilding since 1999. His has consistently earned a top four placement in each show, including a victory in the light-heavyweight division at the 2004 NGA Heart Of America.

Contact Brian:

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Travis Burkybile

(B.S Kinesiology, NCSF, Certified Performance Taper, CPR)


Strength training, body composition & golf performance

Since joining Core Fitness in 2007 Travis has dedicated himself to raising the standard of personal training information and application.


Travis’s is committed to helping his clients achieve their desired results. His passion and commitment has enabled him to achieve success with a wide variety of people.


Whether he is helping a client effectively drop body fat, successfully increase muscle mass or straighten out their golf game, Travis thrives off his relationship with clients and shares in their success’s.


“Watching a client achieve their goals makes being a strength coach the best job I could ever imagine.” - Travis


Some of Travis’s clients include:

  • Stay at home moms
  • Golfers
  • High School athletes
  • People interested in finally changing body composition


Interested in becoming Travis's next successful client?

Contact Travis:

Many people know that Travis enjoys reading strength training articles, Olympic lifting, playing intramural football and softball, but most people do not know that in July his experienced his very first skydive and is looking forward to his next jump.


What do Travis’s clients had to say about him?


Core Fitness Training and the Feed Your Genes Program have changed the way I think about both food and exercise.  I thought I had to eat salad and run 5 miles every day to achieve my fitness goals when, in fact, neither of those things were getting me the results I wanted.


When I began the Core Fitness program, I was not a believer in trainers.  I thought they were there just to motivate you to get to the gym or teach you how to use the equipment.  But, after working with my Core Fitness trainer Travis, I have learned that the body is a fluid thing and my trainer changes my workout routine based on my body’s changing needs.  


Through strength training and learning about the foods my body can best process, Core Fitness has helped me reach my weight, strength and overall health goals.  They focus on you as an individual and what works best for your particular body as opposed to using a cookie-cutter approach to diet and exercise. This is the only program that has given me the results I want and taught me how to maintain those results!

Core Fitness is not just a training program.  It is a school in changing your lifestyle to achieve a well-balanced, healthy lifestyle. 


Kim Friesen - Chicago

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Ginger Vulchev


Flexibility and Body Composition Specialist

Ginger is a certified professional strength coach working with urban professionals interested in people interested in:

  • Changing Body Composition

  • Improving Flexibility

  • Improving Strength

After four years of direct mentoring from Core Fitness President Dusten Nelson, Ginger has work to develop unique Core Fitness programming including the execution of “Hard Core.” She also specializes in orthopedic body strength training, which is individualized for each client.  Ginger teaches another program that is specific just for woman called, “Train Like Jane.”   

Ginger is no stranger to working out.  She spent her childhood career as a gymnast, training with world-renowned gymnastic coaches, Bela Caroli and Vladimir Gogolotz. 

After retiring as a level 10 gymnast, Ginger went on to coach her own competitive Gymnastics team before participating for several seasons as professional cheerleader in the CIFL & NAFL.  No longer competing, Ginger still tumbles and takes as many dance classes as her busy schedule will allow.

Her experience as an athlete and performer has enabled Ginger to provide adults with the physical and emotional support needed to reach their fitness goals.

Want to change your body composition, improve your strength and flexibility?

Contact Ginger:

What do Ginger's clients have to say about her?

I am an Emergency Medicine Physician, and despite being in the health field I previously had never worked out in a gym.  A little over a year ago, Ginger at Core Fitness gave me a complimentary training session, and we have been working together since.  She is a joy to work with and I look forward to each session I have with her.  She has an unbelievable ability to push her clients beyond what they think they are capable of, without causing any pain.  Her knowledge of the human body is great and without a doubt enhances her ability to train someone safely and effectively. 

Before meeting Ginger I had worked out three times weekly for a year without any significant results, and after having training sessions with her for just a few weeks I saw major changes in my body - and have before and after photos as proof!

I recently fractured my left wrist, and unfortunately have had to take a break from the gym for a few months.  In the last few weeks I have returned to work with Ginger in the "Hardcore" program, they have tailored the classes to deal with my disability, allowing me to get a great workout even without using my wrist. 

She inspires me to taking better care of myself and push myself to be in better shape - and I am very thankful, and fortunate to have her as my trainer.

Noah DeGarmo, MD - Chicago

Winner of the 2009 Core Fitness Winter Challenge

Click here to see Noah's before and after pictures

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Cortez Cross

Cortez developed a passion for fitness as a teenager. He played baseball and ran track at a young age. Although he was active in sports Cortez still struggled with his weight. He made it his main endeavor to change his body composition. In doing so he lost over 50 lbs. He then realized he wanted to help others make similar lifestyle transition.

Cortez joined Corefitness Chicago in 2006 with a certification through the National Council of Strength and Fitness. Cortez's elite development process began through Corrective High-Performance Exercise Kinesiology training system which focuses on strength, stability and postural alignment.

Cortez has successfully helped his clients achieve their goals while being instrumental to them both mentally and physically. In addition to working with his personal clients Cortez is the primary instructor for Corefitness' men group program, "Primal". Cortez has 13 years of experience in muscular development.

He has proudly competed in natural bodybuilding since 2006. His first show he placed 3rd and since has consistently earned a top two placement in each show.


Contact Cortez at

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Devon Liebl


Strength Training & Body Composition Specialist

Devon gained her passion for strength training while playing basketball for Lake Forest College in Illinois. After graduating in 2006 she traveled Europe with the USA Athletes International basketball team where she learned to train and compete amongst elite athletes.

When returning she began pursuing her career in health and wellness. She became passionate to help others achieve their fitness goals and athletic accomplishments.

Devon is a certified professional strength coach working with men and women who are interested in 

  • Changing Body Composition
  • Improving Strength
  • Improving Athletic Performance

Devon has worked to develop Corefitness' "Fit 2 Hit" structural balance group program which specializes in orthopedic body strength training. She has also helped develop the female specific group class "Train Like Jane". Devon teaches several classes a week, bringing energy and enthusiasm to help clients achieve their goals. 

When Devon is not in the gym, you can find her on the basketball court coaching a youth girls basketball team. During Devon's free time she still enjoys playing competitive basketball and flag football.

Want to change your body composition, improve your athletic accomplishments or improve your strength?

Contact Devon:

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