About Relentless Fitness


Since 2011, we have been changing the game when it comes to personal training in St. Louis Missouri. Relentless Fitness South City is an exclusive, membership free, personal training facility. We have 8000 sq ft of personal training space with equipment optimized for personal training with our certified personal trainers. Our Relentless Fitness personal trainers have a wide array of specialties to fit your health and fitness needs such as weight loss, Olympic lifting, power lifting, body building, physical therapy, and much more! Feel free to check out the rest of our website and social media to see what Relentless Fitness is all about! Check out our trainers page today to get set up with an appointment with the trainer that fits your needs.

Our Mission


Relentless Fitness is built on the foundation of service first. We have been around many training companies, owned fitness facilities, and been around many trainers. Because of this we believe in doing things a little bit different, we put our clients and trainers first! This simple concept has been lost in the fitness industry but we are here to change that. Our mission is to change the game when it comes to personal training by facilitating real change in not only our clients lives but also our trainers lives. We believe that Fitness is one of the foundational pillars of health, wellness, and overall quality of life. If we can create an atmosphere that makes fitness enjoyable then we can create something sustainable, and sustainability is the key to crushing your fitness and life goals.

What we do


At Relentless Fitness we understand that fitness is not “one size fits all” and because of that we do our best to pair you with a trainer that is well versed in your specific goals. At Relentless Fitness, our Personal Training services have been tested and proven to work. We work with trainers with backgrounds in everything from weight loss, power lifting, body building, physical therapy and rehab and more! Relentless Fitness is changing the game when it comes to personal training. Contact us to set up an appointment to come try out our facility to see why we stand out above the rest!

Our Facility


Having owned a gym in the past and worked with multiple club gyms, we were able to pull the best out of each situation to create a gym that is perfect for personal training.

Check out what we have to offer!

  • PODS: Think of everything you need to train in one spot!

    • squat rack, deadlift platform, dumbbells, kettlebells, boxes, ropes, slam balls, wall balls, etc.

  • TURF: 75 ft x 12 ft of turf means plenty of room for sled pushes and dynamic workouts

  • 8 station cable rig

  • Multi station rig

  • Tire for flips and slams

  • Leg press

  • Leg extension

  • Ham curl

  • Chest press

  • More dumbbells and Kettlebells

  • Stretch area

  • Bathrooms

  • Changing room

  • Swag shop

Owner

Josh Houseman

Owner and Founder, Josh Houseman started Relentless Fitness in 2011. Josh started getting into fitness from a young age when competing in gymnastics and later went on to coach as an assistant to the women’s gymnastics team at Southeast Missouri State. After moving to St. Louis and working with club gyms, Josh left the club gym setting to better service his clients by starting his own gym, Defining Natural Ability, with a few partners. Josh also took Relentless Fitness to a local 24,000 sqft start up gym to help service the personal training for that start up. Relentless Fitness grew and consistently had a staff of up to 10-12 trainers working in this unique gym. This helped him realize there was a major flaw in the Personal Training industry, trainers weren’t getting paid! The idea for the new Relentless Fitness Gym was sparked from that realization with the goal of not only providing the best service possible for clients, but also making personal training an option as a life long business for both full and part time personal trainers. Josh has a vision to spread through the St. Louis area with Relentless Fitness locations to provide a space for not only trainers to make a sustainable living but also to help them develop themselves as entrepreneurs so that they can create and grow their fitness businesses.