QUAN·TUM /ˈkwän(t)əm/ (n) def’n: the quantification of things in motion

We’re Nashville’s 100% independently-owned fitness experience. QNTM Fit Life was founded by an individual who set a goal and crushed it, but it wasn’t a walk in the park. His philosophy? Change takes dedication. Change takes variety. Change takes a total lifestyle transformation that’s so much more than just a gym life.

We’re here to encourage you. We’re here to help you see results. We’re here to help you achieve your Fit Life however you see fit.

Because your experiences inside of our state-of-the-art environment are coupled with superior revitalization and recovery amenities, our members are able to live a fulfilling life inside AND outside these walls.



Johnny Wilkins

Johnny Wilkins was overweight for the first 20 years of his life. By 2007, he had reached 250 lbs. at 32% body fat, and a 40″ waist. That’s when he finally decided it was time for a change. He wanted to be healthier, feel better, and get his confidence back.

Fast forward to fall of that same year, and Johnny had fallen in love with fitness. Simple cardio machines led to swimming, which led to running, which led to bodybuilding. Through hard work and better attention to diet, he lost 85 lbs. in a single year. Over time, his workout styles have changed, but his passion for fitness has remained.

Wanting to break away from the limited fitness options that Nashville had to offer, he set out to open his own club. Through purposeful choices in music, service, equipment, and culture, something different took shape. QNTM’s mission was to become a destination that served as much more than simply a place to “workout.” It has evolved into a true fitness community, and Nashville’s Premium Fitness Destination.


Carolyn Grasse

Over 8 years ago Carolyn found herself in a sedentary office job where her nutritional habits and activity level took a serious hit. One year and 40 pounds later, the desk life had taken over. Before things got too out of control Carolyn decided it was time to start making better choices.
Reprogramming your mind and schedule takes effort. Carolyn found that the effort came with obstacles but she refused to let the obstacles stop her. Carolyn took back control of her life and switched careers. Before she knew it she had earned a physical trainer certification and was teaching fitness classes.

After opening a gym, competing in a figure competition, and discovering a new love of distance running Carolyn had a renewed commitment to her fitness goals and a more fulfilling life. She looked high and low for the right place to call her new home and she found her fitness family with QNTM.


PJ Kellogg

PJ Kellogg thought his career began when he moved from his hometown of Nashville to Washington, D.C. after his enlistment with the Marine Corps was finished. PJ served two tours in Iraq in support of Operation Iraqi Freedom. PJ then went on to spend 4 years working for the Secret Service in numerous roles that included personal protection of the President and Vice President. After long hour weeks usually working alone, PJ decided it was time for a change. A change that led him back to school to receive his undergrad and Masters in exercise science and Kinesiology. PJ first started managing fitness facilities in D.C. before helping struggling businesses as a consultant find financial freedom by making better business decisions. PJ has coached over 5,000 group fitness classes ranging from CrossFit to Orangetheory and everything in between. After moving back to Nashville, PJ finally has a home at QNTM Fit Life.

Group Experiences Manager

Ashley Vargas

Ashley started her fitness career as a Cycle Instructor 6 years ago and became a Personal Trainer 3 years ago. When Ashley moved to Nashville, she quickly found her second home at QNTM! She started as a Cycle Instructor for QNTM and has continued on to become a Performance Coach in the Fit Lab.

Ashley is passionate about health and wellness and feels group fitness provides a positive and motivating atmosphere that inspires members to stay consistent in living the FitLife.

Sales Manager

Jarell Lawson

Jarell has been in fitness industry for over 10 years holding multiple positions up and down the California coast. His passion for fitness began at young age playing soccer, which enabled him to travel across the country as well as internationally.

After fighting through multiple injuries and surgeries, he realized that sometimes the hardest part is reigniting the the fire that pushes you to become the very best version of yourself. He believes that placing yourself in the right environment among the right people is what motivates you to reach goals you may have once thought to be unachievable. The energy and drive of the QNTM Fit Life staff and it’s members is what brought him here.

Operations Manager

Caleb King

It all started with a health class at Middle Tennessee State University. Caleb has been overweight for most of his life reaching a maximum weight of 315 lbs, but while attending MTSU for a degree in audio production it was a health class, only taken for an “easy A”, that remarkably changed his life. Fitness has since then been a newfound passion and lifestyle for Caleb; as a result, through hard work, consistency, and commitment he has lost an immense 110 lbs. He’s not stopping anytime soon.

Caleb has previously managed at two fitness facilities, but has finally found his new home at QNTM. You can catch him throughout the building running, cycling, and lifting practicing for his first marathon. Caleb’s goals are to provide the best QNTM experience for you and to bring happiness to as many people as possible through the power of music, fitness, and mental health awareness.

“Your fitness is 100% mental. Your body won’t go where your mind doesn’t push it.”

Training Manager

Nikko Glasper

Currently in Nashville, by way of Chicago’s West Side, Nikko is a Southern Illinois alum with a degree in Physical Education and Sports Admin. As a certified personal & group fitness trainer (NPTA, NESTA, ACTION), Nikko specializes in strength training, conditioning, and weight loss.

Before Qntm Niko explored his passion for Martial Arts. Nikko pushed his limits and became a 1st Degree Black Belt in Moo Duk Kwan Karate & Blue Belt in Renzoku Jiu-Jitsu. While earning his degrees Nikko was a 4 sport athlete and utilized his classroom studies to maintain his body as he competed in 2 cross country state qualifiers. During his college years he competed as a mixed martial artist under the moniker Nikko “The Nightmare” Glasper. Niko’s had a winning record of 5 wins and 2 losses. His last fight was nationally televised as a “never before seen” knockout.

Nikko has a passion for fitness and will help you become a better version of yourself by any means necessary.

Creative Consultant

Mario Purnell

Mario Purnell has a background in various areas that include fitness, accounting, music, and visual arts. His fitness journey began from football and progressed to personal training while in college, where he earned a Bachelor and Masters degree in Accounting. His fitness background includes bodybuilding, powerlifting, calisthenics, and martial arts. He then transitioned to the accounting field where he worked as a Certified Public Accountant for 8 years. During this time, Mario gained experience in the music industry along with digital content creating. Regardless of the career, Mario maintained a balanced Fit Life by remaining consistent in his fitness training.

He is now a digital branding consultant with an emphasis in photography, videography, and social media branding.