About Us

Tighten the Core™ designs and manufactures fitness and rehab equipment that integrates core muscle activation with spine stability exercise to produce a highly efficient way of training.  Compared to seated equipment, the company’s patented products place users in a biomechanically safer and more efficient spine neutral position —the safest position for your spine.

Jeff.Credentials  click to enlarge

Dr. Jeff Fishel – Founder/CEO

Jeff holds a Doctorate of Chiropractic from Logan College/University of Chiropractic in Chesterfield , Missouri with 22 years of private practice. He has a Masters in Sport Science from United States Sports Academy, Mobile, Alabama and has spent 14 years working with Division I and World Class Track Athletes. His post doctorate training has been extensive in neurology and rehabilitation. Since 1991, Dr. Fishel has been in private practice, leading him to work with stroke patients, spinal trauma patients, paraplegics, professional sport athletes, Olympic medalist and many other world class athletes. His method of core training with spine stabilizing exercises is unique to anything on the market today.

In specific case studies Dr. Fishel conducted, he has implemented core method training for 5 wheelchair patients to go from non-ambulation in a wheelchair to slowly progressing to a walker, then cane, then modified shoe. Today, all 5 patients are walking unaided.

Jeff is passionate about his profession and dedicated to the science of core training and its benefits with low back care. Jeff truly is concerned about the health and well-being of people , helping people live active, healthy lifestyles.

Dr. Jeff’s story

I have sustained many injuries involving severe trauma which required months of rehabilitation. Although my injuries have been severe, they are minute compared to impairments of some of the patients I have treated today. I am very blessed to have the ability to help others.

As an athlete in high school and college, I suffered many injuries. But, when I broke my back it changed my life.  On February 9, 1980, my good friend Marty Thomas and I went back home for the weekend. While at home, we were driving back from a small get together with friends in a nearby town when a drunk driver crossed the center line and hit us head-on. Both drivers were killed, Marty being one of those drivers. I shattered my leg with a compound comminuted fracture and compression fractures of the lumbar spine. Bones were sticking out of my left leg and the bottom of my shoe was facing me. My left leg, with both knees fully extended, was approximately 9 inches shorter than my right.  My wounds were deep; psychological greater than physical. Placing my feet on the dashboard right before impact saved my life. No one was wearing seat belts in either vehicle.

The doctor who operated on me was a close personal friend of my grandfather. He cleaned all the debris from my ankle and pieced it together as best he could. He told me I would never be able to walk without a limp and if the toes turn black I would lose the limb. I was in a back brace and a leg cast for several months. When those came off, the rehab began.
After weeks in the hospital and many more weeks in rehab, I became faster and stronger than I was before.  This led me to find out as much as possible about the science and biomechanics of low back and spinal health. For many years I studied and followed the research from the foremost authorities on back pain and rehab, with specific attention to the work of Dr. Stuart McGill.

Today, I work with spine and trauma victims for a living and have worked with several world class athletes.  How this all started was, I wanted a low back and core training device that was safe for my spine patients.  Something that placed the user in a spine-friendly position, that didn’t compress the spine and was able to deliver motion into the low back.  And, I was sure that there was something out there that I could buy.  The reality was there was nothing.  One of my patients said that someone should make one then; and I said, yeah someone should…  So I went to work in my garage building a prototype.

What started out as a simple low back machine has turned into a lot more.  I was working with some Olympic athletes that were coming off injuries and we started finding more and more uses and implementations for the machine.  We knew that in order to maximize our power, we needed to maximize muscle activation patterns within our core. So, we started testing all sorts of exercises using EMG technology.  EMG stands for electromyography.  An EMG measures the electrical activity of muscles and their contraction.  The EMG was showing the Core Activator was readily activating multiple core muscles.  The athletes were able to activate abs and obliques as well as low back all at the same time.  So I rounded up some friends and we got to work placing units within different walks of life.
A Major League Baseball team started integrating our machine into their core training and therapy programs. Other users included the US Air Marshals, physical therapists, and chiropractors.  We brought it to a biomechanics laboratory at a major university for analysis and then we met Doc Suttie. Doc is one of the top PGA golf instructors in the world and is a doctor of biomechanics.  He has had 3 back operations.  Well, Doc now has a Core Activator at each of his training locations and is a big fan of our product. He claims to be two inches taller now.
The spine patients that I work with had the neural pathways still intact, but their prognosis was not good. These young men had been in their wheelchairs for 2 years and up to 10 years for one patient. All are walking today! See their stories here.

Mission Statement

REDEFINING FUNCTIONAL TRAINING:  Our focus is to help change the exercise paradigm from muscle isolation to a more efficient way of training.  At TTC we want to empower people to develop and maintain a healthy lower back, and become more efficient movers.   We are creating equipment that can be used by spine patients, world-class athletes, and everyone in between. All of our equipment is based on proven scientific research and integrates core muscle activation into every exercise while taking compression loads off the spine.