Voted #1 Fitness and NUTRITION Studio in St. Louis

Precision Fitness is STL’s Premier fitness destination! We help you reach your goals through research-based, custom-to-you Fitness and Nutrition Training Programs

We offer the personalized, high-touch support of a small gym but with all of the specialized equipment of a large gym.

Fully Custom Fitness and Nutrition Services

At Precision, we offer a variety of cutting-edge, research-based medical services and products so that you can look, feel, and be your best self.

Small Group Training

Small Group Personal Training is where individualized coaching meets the encouragement of a close-knit community. Our sessions blend expert guidance with group support, helping you achieve your fitness goals effectively. Join us to unlock your full potential today!


1-on-1 Training

1 on 1 Personal Training was designed to help you achieve maximum results by tailoring every aspect of your training experience to your unique goals and needs. With our 1 on 1 Personal Training, you’ll have the undivided attention of our expert trainers who will create a customized program specifically for you.

Customized Nutrition Programs

Transform your health with our expert guidance and personalized nutrition plans designed just for you! Whether you’re an athlete seeking performance enhancement, an individual pursuing weight loss, or someone committed to overall well-being, our specialized nutrition programs, curated by registered dietitians in the STL area, are tailored to support your unique journey. 

Supplement Recommendations

While whole foods are the foundation of a healthy diet, supplements can complement and support specific fitness goals. Our supplement recommendations are tailored to enhance your overall well-being and aid in achieving your health and fitness goals.

Know exactly what you’re looking for?

Please feel free to contact us, our team is ready to assist you immediately.

+1 314-786-5389


Nutrition & Fitness Support

Our team is highly educated in nutrition and fitness, so that we can ensure you are receiving the best support for your goals. We rely on this knowledge and experience of what works, and we are constantly learning and integrating the cutting edge fitness and nutrition information to provide you with the best support possible.

Personalized Fitness Plans for Lifelong Goals

We don’t just follow fitness trends or give you a one-size-fits-all approach to training, like many of the gyms that are out there. We customize your workout plan based on you and your goals, and we teach you the foundations and skills to reach your goals both now and for a lifetime of fitness.

Customized Meal Plans by Nutrition Experts for Your Fitness Goals

We know that nutrition is essential to your Fitness Goals. Our on staff nutrition experts create customized meal plans based on you, your lifestyle, and your wellness goals. When needed, we work with Precision Medicine to draw lab work to ensure that we are setting you up for success in all ways.

Positive Mindset Gym: Judgment-Free Fitness Space

We know the power of a positive mindset when it comes to training & fitness. Our gym is a positive-mindset, judgment-free space.

Who We Help

If you have a goal to improve your fitness and nutrition, you are welcome here at Precision. Our clients include people of all ages, genders, and stages of fitness and ability.

While we work with anyone who is serious about their fitness goals, we also specialize in both Competition Prep and Pageant Prep.

We meet you where you’re at – whether your goal is to train for a competition, build your overall strength, or have the physical strength to keep up on the little league field, we are here to help!

We also know that gyms can be an intimidating place for many people, and we have intentionally created a welcoming, judgment-free, positive-mindset community. If you are here to better yourself, we are happy to support you!

How Our Training Programs Work


First we meet to discuss your goals

All of our clients start with an Initial Fitness Consultation with one of our Trainers. During this initial consultation, our goal is to get to know you, your goals, and your big WHY for those goals, so that we can determine if and how we can help you.


Second, we discuss a customized program to help you get there

Once you are ready to move forward, our Trainers will recommend one of the following:

One of our 16 week Training Programs, which includes a Customized Workout and Meal Plan for you to complete, plus you receive support from your personal trainer throughout the 16 weeks. These programs include access to our gym at specific times that you will sign up for, where our trainers are here to support you during your workouts.

Want to DIY Your Workout and Nutrition from home? Our Fitness and Nutrition Team can also create customized Workout and Meal Plans based on your unique goals, lifestyle, and needs. (Want to learn more about our approach to nutrition? Head over to Precision Medicine to learn more!)

Now it’s time to get started!

You will pick your times to join us on the gym floor, plus you will receive your customized meal plan for home. Where appropriate, we also recommend optional support that can help you reach your goals, such as supplementation, IV Therapy, or a visit to our in-house Sauna, or a sports massage from Marcus, our in house massage therapist.

Measure your progress

We help you measure your progress along the way

Rotate your workouts

We rotate your workouts to maximize your time in the gym, and help to keep your workouts fun and exciting.


Don’t miss our updates

Stay informed with our updates. Subscribe today and never miss out on exclusive content and offers.

    You’re In Good Hands

    “Our valuable clients deserves the best”

    Dave Drago (Drago_STL)
    Dave Drago (Drago_STL)

    In October of 2015 I was debating on competing in my second NPC Championship. Even before I decided to do the show I knew for sure who I was going to call to be my prep coach and handle my diet and workouts. That would be Jamie Speiser at Precision Fitness and Spa. I t was a little over 3 years since my first competition and I have always followed Jamie on social media and it was apparent of the success he had with his clients. Every competition picture that got posted had him standing with his athlete with a medal around their neck! There are many things, but one thing that stuck out with Jamie is that he sincerely cares about his clients and wants them to succeed as bad as they want too themselves! In my 4 months of prep I went from 11.6% body fat to just under 4% and I gained several pounds of muscle in the process (And oh by the way, I was 48 years old for this competition and I took 1st place in my masters class!) If I were to do another show; he'd be my Go To coach, no doubt about it!!!

    Lindsay J NP
    Lindsay J NP

    I have been training with Jamie for about 5 months now. I am in the best shape of my life and have learned more about diet and exercise Than I ever could have dreamed of. everyone is always so positive and have a special.way of pushing you to achieve your goals.

    Dave Plumley
    Dave Plumley

    WOW !! GREAT !! TEAM WORK!!! POSITIVENESS !!!! SUPPORTIVE !!! ENCOURAGEMENT!!! YOU MEAN SOMETHING !!!!! WELL INFORMED!!! LIFE CHANGING !!!! These are just a few words that I experience working with Precision Fitness and SPA each day. Jamie Speiser and his staff are all of these and more and have kept me going through all the struggles and over the hills when the tough times have come. Before starting with Jamie I was the type of person that each day was from the chair to car to chair at work, back to car back to the couch. I was on oxygen at work and home, multiple medications my health and lifestyle was in a fast track to going to a fast end. My weight and condition was the "elephant in the room" that no one wanted to bring up to me as they didn't want to hurt me or my feelings. Then two people who changed my life and asked if I would meet someone that might be able to help me and they introduced me to Jamie Speiser. UNBELIEVABLE DAY FOR ME. HE OPENED THE WORLD BACK TO ME AND GAVE ME BACK MY LIFE. The simple things that people take for granted to be able to sit in a regular chair to watch your granddaughter dance. Be able to walk and play catch, go to the pool to go swimming, able to shovel your own snow and cut your own grass. All lift changing >>>>> I can go on forever about the numbers and the loss in lbs and inches ( which is awesome). The major changes I have experienced is the awareness I have gotten from Jamie and everyone at Precision Fitness and the courage and knowledge of making good healthy decisions at each meal. The challenging work-outs are tough but are adjusted to meet everyone's needs and abilities. They are fun and challenging the staff keep you wanting more and wanting to come back. Jamie Speiser , and the staff at Precision Fitness is a place that everyone can feel at ease. I hope everyone will come and try it for themselves.