Fitness & Gyms in Brentwood, CA

“Just moved to the area and was looking for a gym that would challenge me and keep me accountable. I did my research and tried a few gyms that I had on my list. This gym was my 3rd to try. And about 10 mins into class, I was obsessed! The coaches and Staff are amazing, The members and coaches completely motivate you and inspire you to be the best version of yourself that you can be. I consider myself an athlete but I can tell you that I am humbled when I’m in class. I always feel AMAZING when I walk out the door!! I love the variety of equipment and exercises which changes everyday. The gym has showers if you need it. It’s clean and very well taken care of. I’ve been here a month now and I feel like part of the family!! This is a great community.”

“I'm 54. I'm not motivated to exercise. I'm not motivated or energized every day when i walk in.. but i make myself walk through the doors.. the coaches take care of the rest! I leave exhausted and energized with a shirt full of sweat. Every. time. I highly recommend orange theory. The new energy is leading to other ways to live better, healthier.. there is momentum now leading to a better diet, healthier choices.”

“Joining Grey Group Fitness has been, without a doubt, the best part of living in Brentwood—not just for me, but for my entire family, including my two daughters (ages 12 and 7) who are part of the kids’ program. This incredible community has become an extension of our family and has completely transformed our outlook on health and fitness.

While every coach here is amazing, I want to give a special thank you to Coach Heather. She has been a true life-changer for my oldest daughter—offering her personalized attention, guidance, motivation, and even custom training. Because of Heather, my daughter now sees herself in a completely new light and carries so much more confidence. Words can’t fully express how grateful we are for the care, commitment, and passion she’s poured into not just our kids, but into our entire family’s fitness journey.

To Heather and the entire Grey Group Fitness family—thank you. And to all the coaches who inspire and push us daily—Eric, Shelby, Gabby, Makenzie, David, Joel, Megan, Tara, and Brian—we love and appreciate you all!”

“Finally working out and seeing results! It’s been the coaches and others that have encouraged me to meet my own expectations! The body scan machine is also a bonus that this gym has! I like seeing the result of building muscle and loosing fat!💪”

“My first class was Heather’s 6 AM session (and it was packed!). A few of us were newbies, and I couldn’t quite keep up at first, but her class motivated me to push myself and reminded me that I’m capable of more.

I’ve now taken classes with almost all the instructors, and I’ve enjoyed every single one. The energy here is great, and I feel better after each class!

Happy to meet with BarreBeat ?”

“Started my membership over a year ago and for a good 10 months I would walk in walked the treadmill for 15 minutes. I would go to the weights, not know what to do and leave didn’t lose any weight was about to cancel my membership until one day. I walked in and Anna asked what I was doing and I told her I wasn’t sure and she asked if I wanted to do her class. I didn’t even know there was classes for free. Immediately was impressed she helped with posture, breathing and helped me go at my own speed. After that, I was walking in one day not sure what I was going to do Was probably going to walk around the gym aimlessly not knowing how to use the machines not wanting to hire a trainer and Hannah said I should try this class that “I’d feel so good after” I did the class and she was completely right I started looking more into the classes and popped into a spin class. Cherie and caprice now are who I start my mornings with. After a couple months of consistently coming at least three times a week I’m up to 20 pounds down. I have more energy to chase my five kids around which is huge but also I’ve built confidence in myself and in feeling healthy. So grateful for instructors by giving me the right information to join a class and giving me that confidence.”

“The gym is clean, the staff is friendly, the membership is respectful of each other and the equipment, the equipment is maintained in good working order- inoperable machines are noted with signs and fixed in a reasonable amount of time. The operating hours are convenient, the dues are reasonable, the gym is well ventilated, the temperature is always pleasant and there are never any unpleasant odors. Many machines are duplicated so there is seldom a need to wait. Overall, it’s a very modern, spacious and well maintained place to exercise. I highly recommend it to anyone and consider it one of the best I have ever belonged to.”

“I’ve been trying to get a hold of them via phone and in person for a few days now . I’ve even drove down there. You guys should show/advertise the staffed hours here so I’m not just guessing everyday, it’s really frustrating.”

“I used to come here all the time. It was a great and fun track, but when I pass by it it’s closed. I’m wondering if it will open sometime or if it’s permanently closed.”

“Awesome people!
Blake & Daniel were super helpful in getting me setup for success. Absolutely will recommend friends to come and sign up.
Thanks guys!”