Your First Session is FREE

We want you to fully understand EVERYTHING that comes with a personal trainer and what your personal training sessions will be like.

This is why all new clients get a FREE first session and free fitness assessment.

Image of fenix fitness trainer jacob training clients outside with text over image of your fitness is important

At Fenix Fitness we believe:

  • A personal trainer isn’t just someone that suggest workouts for you to do.
  • We’re here to help you through the struggles of staying on track.
  • We’re here to encourage you when you feel like giving up.
  • We’re here to assess and reassess your progress as you get better and better.
  • We’re here to answer any questions you have and guide you through your fitness journey.

Our personal trainers soon become THE PERSON you trust and someone that understands your personal hurdles. Not everyone has the same path to reaching their fitness goals. We all have our own mix of challenges we must face.

But the basis remains the same. You need to understand what it takes to reach your fitness goals and learn the best path you can take to get there. Maybe that’s getting a better grip on your nutrition, or sticking to a more consistent routine.

We all don’t have the same path forward and that’s why a personal trainer is helps so much – it’s truly personalized to you.


Failing to prepare is preparing to fail.

Benjamin Franklin

What you can Expect on Your First Session

image of person holding a fitness assessment machine

Body Composition Testing

In order to get to your goal, you have to know where you’re starting.

Using our Inbody Scale we’ll get measurements of your metabolism, body fat, and muscle mass.

It keeps track of all previous scores so that we can guarantee progress.


Habit Cycle image showing triggers, desire, action and rewards

Nutrition Evaluations

Nutrition is one of the most important aspects when it comes to reaching your goal.

It’s commonly said: “You can’t out-train a bad diet.”

So during our assessment, we will go over your current eating habits and incorporate changes into your customized plan. The changes we make will be tailored to your situation so that you get actual results.


fenix fitness trainers working with clients young and old for in home personal training website

Movement Assessment

No two bodies are built the same.

During the movement assessment, we will take you through 7 dynamic tests that help us find the right exercises for you.

Going to the gym without knowing what exercises to do and how to do them will prevent you from reaching your goal.

Exercising without guidance is dangerous, and if you’re injured you can’t train.

When we put exercises, that work for you, in your custom program you’ll see & feel your body change. Your body will feel better than ever.


image of a map and an icon with a weight to indicate goal mapping for your road map.

Goal Mapping

At the end of your free fitness assessment expect us to go over your goals, obstacles, and create a tailored plan that gets you started on your journey.

You’ll be able to ask any questions or address any concerns.

Plans are not rigid. We understand that everyone’s life has different obstacles. It’s just a fact of life. Our trainers have all been through it and we can work through it with you too.


Mobile Personal Training O'fallon Missouri

Ready to Experience a Better way to workout!

We Work With:

  • Men, Women & Children
  • Older People
  • People with Medical Issues
  • Beginners and Athletes
  • Individuals
  • Couples – and Groups

We Can Help You:

  • Lose Weight – and Keep it Off
  • Build Muscle or Tone Up
  • Improve Balance
  • Reduce Risk of Injury
  • Get Stronger
  • Learn About Nutrition and Safe Exercises
image of jacob our o'fallon area personal trainer

Trainer Jacob with Fenix Fitness

View Jacob’s Profile Page