Courtney Isacsson


Bachelor's degree in Biology from Lindenwood University

Master's degree in Business Administration from Lindenwood University


Pain-Free Performance Specialist

USA Weightlifting Level 2

Precision Nutrition Level 1 Coach

Functional Movement Screen L2  

CrossFit Level 1

CPR Certified


I have been involved in fitness my entire life. I have an older brother that I was always trying to keep up with and I think it’s part of what founded my athletic, driven nature. Growing up, I played many sports like baseball, basketball, etc with my brother and neighborhood best friends. I played competitive soccer from Kindergarten until I graduated college from Lindenwood in 2012. I was able to travel all over the country for soccer and I have to thank my parents for such amazing experiences.

After I finished my soccer career, I needed to find something active to stay healthy. I had joined a few regular gyms and would even go on runs (anyone who knows me now knows I dislike distance running so there’s no shock I didn’t want to stick with that). I basically would walk into a regular gym and do a set on each machine and head out. I wasn’t seeing the results I wanted and so I knew I needed something else. Luckily, I had met Oscar, who was already into CrossFit, so he introduced me to it. We did our first CF workout together at Lindenwood and my arms hurt so bad I could barely wash my hair that week. Naturally, I was sold.

In 2017, I decided to switch to Olympic Weightlifting full time and to supplement my fitness with CF/Swift classes. Weightlifting gives me an opportunity to compete again which makes my heart so full. It may seem like another activity to most, but I have never learned so much about resilience, determination, grit, and pure hard work from anything else. My dad always called me the Black Knight (from Monty Python) because of my unwillingness to go down without a fight and I finally see it now. I have qualified for the highest level weightlifting competitions in the United States, the National Championships and the American Open Finals. My next goal is to represent the USA on the International platform at some point in my life.  

As far as my career at TNT, I joined the staff and began cleaning the gym in 2013. I started working as a coach and doing the newsletter in 2014. In 2019, Oscar and I took over ownership of the gym and it’s really come full circle. TNT has truly changed my life forever and I’m so grateful for the opportunities and people that have come into my life because of it.  

Favorite CF movement: 


Least favorite movement:

Sled push

Started CF: 


Favorite thing about being a fitness professional:

I enjoy being a coach because I love seeing people turn their "impossible" expectations into possible realities. We are capable of so much more than we believe ourselves to be and I love the watching people build confidence in themselves and conquer their goals.

Favorite healthy food:

Steak and sweet potatoes

Favorite cheat meal:

Pizza and red wine

Favorite hobby outside of fitness:

Reading books

Personal fitness achievement that I'm proud of:

Qualifying for USA Weightlifting National Championships multiple years in a row