the perfect fitness formula
Hit every element of fitness in every workout.
Try a Free Class
4 blocks. 40 minutes.
X4 fitness is a full-body, interval workout for all fitness levels.
Classic
Classic
Combines lifting, sprint work, endurance, and core/accessory movements. Members can expect this to be a full-body workout
Strength
Strength
Slows things down to focus on resistance training through heavy weights. These classes are meant to challenge you and build strength.
Burn
Burn
Starts and ends with intervals on all machines with high effort, lightweights, and bodyweight movements. Expect to test your endurance limits, burn the most calories, and leave VERY sweaty.
Flex
Flex
Upper body and core-focused, designed to push you through higher reps and burnout sets. If you’re looking to build muscle definition, this is the class for you.
Sprint
Sprint
Fast-paced and focused on explosive movements. These classes are designed to race against the clock through a series of high-effort sprint-style blocks
Gauntlet
Gauntlet
The most hype class that occurs once a month. Members can expect to test themselves in shorter time frames that end with a max effort sprint.
From day one, I knew that it was the place for me to start making changes in my life. It's the perfect formula, including the environment and coaches.
valentina martinez
The coaches helped push me out of my comfort zone while providing guidance to get a great workout. Now, X4 is a part of my daily routine!
heath anderson
I love X⁴! I’ve been coming for four years and I’m still motivated and excited for each class. I love that I can get a great workout in 40 mins.
Kara luker
The workout environment, equipment, and coaches are top-notch. I've gained many fun memories and become the healthiest I have ever been."
Sammy Lorino
From day one, I knew that it was the place for me to start making changes in my life. It's the perfect formula, including the environment and coaches.
valentina martinez
The coaches helped push me out of my comfort zone while providing guidance to get a great workout. Now, X4 is a part of my daily routine!
heath anderson
I love X⁴! I’ve been coming for four years and I’m still motivated and excited for each class. I love that I can get a great workout in 40 mins.
Kara luker
The workout environment, equipment, and coaches are top-notch. I've gained many fun memories and become the healthiest I have ever been."
Sammy Lorino
X4 is consistently the best full-body workout in Birmingham! The programming takes all the guesswork out of training!
Clairee Hovater
It's been fun watching X4 grow and being a part of it since the beginning... best gym in the community.
Sam mcwhorter
I've been a member since day one. X⁴ does a great job on implementing new movements, workouts, and machines to keep me coming back for more.
Michael Burchfield
"After trying several different strength training and HIIT workouts, I found that X⁴ is the most comprehensive full body workout in under an hour!"
Ashley Ray
It's been fun watching X4 grow and being a part of it since the beginning... best gym in the community.
Michael Burchfield
X4 is consistently the best full-body workout in Birmingham! The programming takes all the guesswork out of training!
Clairee Hovater
It's been fun watching X4 grow and being a part of it since the beginning... best gym in the community.
Sam mcwhorter
I've been a member since day one. X⁴ does a great job on implementing new movements, workouts, and machines to keep me coming back for more.
Michael Burchfield
"After trying several different strength training and HIIT workouts, I found that X⁴ is the most comprehensive full body workout in under an hour!"
Ashley Ray
It's been fun watching X4 grow and being a part of it since the beginning... best gym in the community.
Michael Burchfield
Constant variety.
Genuine community.
Find your studio
our programming
Never do the exact same workout twice.
X4 programming is designed to meet the needs of all fitness levels and changes daily to always provide you with a fresh, intentional workout. Whether you’re a first-time gym-goer or a dedicated fitness guru, you’ll see results in your cardio, strength, and stability, rather than just one aspect of fitness.
our studios
Don't just join a gym.
Join a fitness community.
Although X4 workouts are self-paced to meet you where you are, our studios have a powerful camaraderie. The members and coaches at your studio will support you and challenge you, as everyone moves towards their goals, together.
membership
Want to train with us?
X4 was designed to work as a stand-alone fitness option, but can also accompany other gyms and training styles. However you do fitness, we have options to fit your schedule and budget.
Diamond
Unlimited/mo
Cancellation flexibility
Access to all X4 locations
2 guest passes/month
Retail discounts
Get started
Pro
8 classes/mo
Access to all X4 locations
1 guest pass/month
Get started
Select
4 classes/mo
Access to all X4 locations
1 guest pass/month
Get started
Bring the perfect fitness formula to your city.
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