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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.

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Our Location

Mundelein

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I have been going to GCP for about 2 years. I guess you could call me a gym hopper as in I would go from one gym to the next but never felt comfortable anywhere until I found them. Coaches Trevor and Nate are amazing at what they do. Not only are they very knowledgeable about health and fitness they truly care about their clients. If you are struggling with anything they will check in on you and see how they can help whether it be emotional support or weekly check ins. Besides the coaches the atmosphere is great! The other clients that work out there are some of the funniest and most caring people I have ever met. It truly feels like a family.

Group Fitness Jefferson

Celestia A.

I have been training for about 6 weeks now and every time I complete a workout I feel so great and refreshed (but slightly exhausted)! Trevor is such a great trainer and knows so much about how the body works and how your body should look and feel during each training session. I trust Trevor 100% and have enjoyed learning something new about my body and have been so excited to see the new things I can do each time I train. My favorite thing about the training sessions is that each day is different and when we finish a month the sessions and workouts change. I love that it isn't the same thing over and over again. Get off your boring treadmill and come train in a super fun group setting!

Group Fitness Jefferson

Lauren H.

I've being training at GCP for over 2 years. Nathan and Trevor constantly provide support and encourage everyone to work harder and do better. It was always tough to keep up with gym routine. However, GCP never felt like a gym and I genuinely enjoy going to classes and having a laugh while training. The class atmosphere is very welcoming and open to all levels. There is never a dull moment! Emphasis is on fun and fitness. Highly recommended!

Group Fitness Jefferson

Aleksandra D.

I had never been a gym fan, not ever. But when Nathan convinced me to give it a go for a couple of weeks, I was to say the least skeptical. And after the first session I was so sore, the soreness in your muscles that makes you feel like you have earn sleep. Nathan's first question to me was simple, what results do you want? What muscle groups do you want to strengthen and how do you want to look? I wanted lean strength and stamina, with a strong core strength. Nat worked me hard and within 2 weeks I could see the results, the birth of abs. The the definition of muscle throughout my body. We never rested, active rests were all I was allowed. This pushed my athletic stamina forward leaps and bounds. Keeping my heart rate up and burning fat fast. Nat used to always say " what we do here in the gym is only 20%. The rest is in your life style, how you eat is the most important thing for your body. The most important thing if you want to see the results your asking for." This statement sat with me incredibly well, because this was my philosophy on weight loss and health maintenance from the beginning. Other than being an incredible source knowledge on matters of muscle growth, form and exercises. Nat has the most caring and playful nature, always fun and uplifting to be around. This helps the 'want' part of getting to the gym. Though now I do not get the pleasure of working out with Nathan any longer, I exercise his techniques and training styles to sculpt and develop the strength and body I want. Nathan is and has been the most positive effect on my life and lifestyle. I couldn't have asked for a better trainer and friend.

Sean L.

I've being training at GCP for over 2 years. Nathan and Trevor constantly provide support and encourage everyone to work harder and do better. It was always tough to keep up with gym routine. However, GCP never felt like a gym and I genuinely enjoy going to classes and having a laugh while training. The class atmosphere is very welcoming and open to all levels. There is never a dull moment! Emphasis is on fun and fitness. Highly recommended!

Group Fitness Jefferson

Tara P.

This is the most unique, unconditional, well educated, fun, exciting, drama free training, I have ever encountered. I look forward to working out, I am shocked how fast the time flies and I am done. I have Never enjoyed or looked forward to working out. For the first time ever, I can't wait!!! So for everyone who may be debating about the same old places, I guarantee this will be your one and only place to see all the "latest" equipment, not boring, no hum drum, no WOW do you have a lot to lose attitude. The young men that own this and train, are by far highly educated, completely non-judgmental, knowledgeable and very professional. This truly lives up to its name of being the Athletic Revolution!

Judy A.

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