300 Washington Blvd, Mundelein, Illinois 60060

Game Changing Performance

Help You Make Your Goals A Reality

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Game Changing Performance


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Ultimate Results Program

Our Ultimate Results Personal Training program is setting men and women all across Mundelein up for success from day one. We're helping people of all experience levels take on healthy, sustainable results and incredible confidence in no time.

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Accelerated Fat Loss

Are you ready to take on total-body success? Then come see us at Game Changing Performance in Mundelein and Jefferson for the Accelerated Fat Loss Group Fitness program. We're helping people of all experience levels thrive.

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Nutrition Coaching

Fitness and exercise are essential to improved health and wellness. But they mean almost nothing if you're not fueling your body with the foods it needs to thrive.

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Wodify Pulse

At Game Changing Performance, we are proud to offer access to the revolutionary Wodify Pulse fitness tracking system, giving you complete control over your workout routine and helping you maximize your results like never before.

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Group Fitness near Mundelein


GCP is the first gym that I have joined where I've seen results. I've lost weight and inches but most importantly gained friends. I always look forward to going and can't wait to return. Keep up the a...

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Rosemarie W

This is the best gym ever, it's like having a personal trainer at all times. I'm no athlete, I'm 59 and have several autoimmune diseases but this gym got me moving. Do yourself a favor and check it ou...

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Group Fitness near Mundelein


The accountability the coaches give helped me so much along the way. I was constantly emailing them with questions and issues, and they were a huge support throughout the six week challenges and beyon...

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Mary K

Excellent workout program and very motivating instructors! GCP really cares for the health and fitness of its members, as demonstrated by amazing communication about diet, fitness and on-site body me...

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Becky L

Excellent trainers! Great classes! They always go over and beyond! They teach you the correct way!This is the place to go if you want a great workout with great trainers!...

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Chris C

Great place and great owners. They really make the workout experience personal and challenging....

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Game Changing Performance

#1 Exercise Studio in Lake County

At Game Changing Performance, we're offering people of all backgrounds and experience levels the best chance to thrive. Our fitness training is designed to meet you where you are and help you takes steps forward every single day. Take on our revolutionary Accelerated Fat Loss program for total-body success and more motivation than ever before or join the Sports Performance Training and improve your skills with tailored training strategies for your unique skill set. No matter what you're hoping to achieve, we have a solution for you.

We are committed to helping our community live a happier, healthier lifestyle and we can't wait to get started.

Just fill out the short form on your screen to learn more today!

Top 5 Mistakes People Make When Starting To Lose Weight

Something as fundamental as nutrition shouldn’t be complicated. The problem is that there is an abundance of information on the internet about the “perfect diet,” which causes people to feel overwhelmed by options. At GCP, we use HSN coaching who have helped over 10,000 people attain and maintain weight loss, and we want to help you too!


Learn About the Services Game Changing Performance Offer

  • Cardiovascular & Heart Health

    Cardiovascular & Heart Health

    The benefits of improved Cardiovascular Health are endless. Along with improved heart health, increased metabolism and improved recovery time, you'll also stave off diseases and have you feeling good long after your workout.

  • Resistance & Strength Training

    Resistance & Strength Training

    Along with toning your muscles and building those bulging biceps and washboard abs, Resistance Training will also protect your joints from injury, help to build and maintain flexibility & balance, and help to burn off and keep off unwanted fat.

  • Injury Prevention & Defy Aging

    Injury Prevention & Defy Aging

    Working out is the secret to staying young and healthy. If you want to slow down the clock and maintain your independence late into life, we can teach you how to get the most out of your workouts and prevent injuries and aging at the same time.

  • Nutrition & Weight Management

    Nutrition & Weight Management

    If your goal is to lose weight, look no further than your Nutrition. You are what you eat! Our team works hard to give you the tools, not only to achieve your goals, but more importantly, to sustain them!

Follow us @gcpmundelein

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We just launched our all new supplement line, check it out at www.gcpsupps.com!!

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