Fitness Center

Game Changing Performance

Mundelein, United States

About Game Changing Performance

Game Changing Performance is a fitness facility located at 300 Washington Blvd, Mundelein, IL 60060, USA.

What to Expect

Game Changing Performance is a place to train in the local area. It is open 10 days a week, with the full timetable shown on this page. Membership options, trial passes, and class schedules are best confirmed directly before your first visit.

What Our Members Say

4.9
Based on 130 reviews · showing 5
j
C
B
K
+126
Powered by GoogleLatest review May 2026
J
Julie Loar
May 2026
GCP is an amazing gym! Workouts are challenging, but the experienced coaches are with you every step of the way. I look forward to my classes every week, especially seeing friends that I've met at GCP! The atmosphere... Read more

GCP is an amazing gym! Workouts are challenging, but the experienced coaches are with you every step of the way. I look forward to my classes every week, especially seeing friends that I've met at GCP! The atmosphere is very welcoming. I'm truly grateful that GCP is part of my life! Thank you Nate!

C
Cassandra De Avila
Feb 2026
I've truly enjoyed going to this gym and making it part of my routine. From the moment I started, I felt welcomed and supported. One of the biggest benefits for me has been how good I feel every single day after attendi... Read more

I've truly enjoyed going to this gym and making it part of my routine. From the moment I started, I felt welcomed and supported. One of the biggest benefits for me has been how good I feel every single day after attending a class. I leave feeling energized, accomplished, and mentally refreshed. It's become something I genuinely look forward to. I also really appreciate the nutrition aspect that's incorporated into the program. The guidance and support around healthy eating have made a difference in my overall progress and lifestyle. Highly recommend this gym to anyone looking for a positive environment, great classes, and real results!

j
julie goldberg
Dec 2025
Your road to a healthier you starts at Game Changing Performance. I spent five years after the pandemic doing nothing about my health. Every year, I gained a few more pounds, and moved less. I kept telling myself that I... Read more

Your road to a healthier you starts at Game Changing Performance. I spent five years after the pandemic doing nothing about my health. Every year, I gained a few more pounds, and moved less. I kept telling myself that I was going to make a change. I finally did about eight weeks ago- and I am so happy that I chose GCP to help me with this change. I read their reviews online and figured I should check it out. Turns out, the reviews for GCP are 1000% accurate- GCP is life changing. Nathan is an educated, super supportive nutrition and exercise coach and I wouldn't be where I'm at today after just eight weeks without his guidance. I'm down more than 12 pounds already just by following Nathan's recommendations for eating clean. And it wasn't hard- in fact, I eat more now than I did before- I just eat smarter and cleaner. I was nervous about going to GCP because I wasn't sure if I was a "group" exercise person, but that first day that I went to meet Nathan, he asked if I'd like to join that afternoons class and I'm so glad I agreed to do that. Everyone in class was so kind, supportive and welcoming. And that hasn't changed- every session I go to is filled with fist bumps and encouraging, supportive comments from fellow members- I look forward to going to class and am honestly bummed out if I can't make a session because of these amazing people. The coaches who lead the classes are focused on two main points- your overall well being and safety and encouraging you to be your best. It shows in every class session- no matter how many people are in class, the coach demonstrates every exercise thoroughly and evaluates form and safety on everyone. I've never felt better and I highly recommend Game Changing Performance to anyone seeking a healthy lifestyle- Nathan and the team at GCP have literally changed my life.

K
Kathy Prochotsky
Dec 2025
GCP is a great place to work out! The classes are under an hour but provide a varied and challenging exercise session. The coaches demonstrate a few variations on each exercise so you can tailor it to be a bit harder o... Read more

GCP is a great place to work out! The classes are under an hour but provide a varied and challenging exercise session. The coaches demonstrate a few variations on each exercise so you can tailor it to be a bit harder or easier as you see fit. There are participants from all age groups so everyone feels welcome. It's the perfect balance of exercise and fun. Highly recommended!

B
Barry East
Nov 2025
I can't say enough good things about this place. The program is excellent, and the people I work out with make every session something I look forward to. The coaches are fantastic - supportive, knowledgeable, and great a... Read more

I can't say enough good things about this place. The program is excellent, and the people I work out with make every session something I look forward to. The coaches are fantastic - supportive, knowledgeable, and great at pushing you toward your goals. In the nearly six months I've been coming here, I've made huge progress in both my physical fitness and my confidence. Highly recommend.

Location

300 Washington Blvd, Mundelein, IL 60060, USA

Get Directions