The 12

I took my first group class last Saturday and loved it so much I’ve just finished my third class! I haven’t been to the Irvine location but the Costa Mesa location is wonderful! It’s a breath of fresh air to be in a class where everyone of all levels try their best and all working together to keep everyone motivated. thank you to all the trainers for always being positive and keeping the energy high!

Always have a great time here great coaches and great programs! Really enjoy taking classes here with my girl. Usually go to Matt’s classes he’s a great teacher. I like that there a lot of cardio but also a lot of weights too. I do a lot of crossfit and at most classes at other places I don’t feel I get a good workout cause it’s all cardio. At The 12 I can scale up my weight and get a good workout that actually gets me sore the next day.
Plus for $ 40 a month the gym aspect is top notch. All new equipment. It’s kinda tiny but never that busy.

Have only been here for a few weeks but I’m hooked for life! The workouts, people, the instructors… there isn’t enough great things I could say about this place! 3 free classes to try it out at first and then you will know what I’m talking about. Stop second guessing and just go here now! It’s too much fun and beneficial not to!!!

I love the 12! It’s a high intensity, high energy work out. I go to both locations (Irvine and Costa Mesa). The trainers are so motivating and so fun! They make the workouts go by so fast! Matt, Tricia and Amy are by far my faves! If you take one of their classes, you will not be disappointed! As a matter of fact, you’ll be addicted! I highly highly recommend the 12!

Both The12 Irvine and Costa Mesa are absolutely amazing places to get your workout. The group training classes are the most effective workouts I have ever done, period. Better than going to the gym on your own, better than P90x, better than other boot camps and boutique gyms, better than anything out there. In my mind, this is because they employee absolutely amazing people and trainers who truly care about the workouts they put together. In addition, they follow The12 system of group training, but from week to week, the classes always change which prevents you from running into plateaus in your development.
The only difference between the locations is that Costa Mesa also includes a full workout gym in addition to the group training they offer. The12 Irvine is just group training. I dig going to the Costa Mesa location when I am looking to do some additional working out prior to or after the group training classes. Though honestly, most of the time the class destroys me to the point where I just skip any extra working out after ;)

Usually I only write reviews for restaurants, but I couldn’t help myself! I’ve tried so many gyms, ranging from 24 hour fitness, LA Fitness, Crunch, to Equinox, but I have to say I absolutely love The 12 gym and community! The classes that the 12 offers focuses on engaging the entire body which I love! The classes offered are high energy, motivating, and group oriented which creates accountability and encouragement. I love that it’s intimate without being over crowded and still has great equipment for members! I guarantee you won’t be disappointed with a membership with the 12!

It’s been said here over and over again but it deserves to be said again. This place is so much more than a gym or just another fitness class. The 12, specifically the trainers, do an outstanding job of crafting workouts that challenge people of all fitness levels. The classes are fast paced, ever changing and fun.
If you want to try something new or just can’t get motivated for another spin class give the 12 a try. You won’t be disappointed.

I go to both locations (Irvine and Costa Mesa) for HIIT training and my favorite thing about the 12 is that all trainers are on point and the consistency of classes are there! I can expect to get the same intense workout at Costa Mesa as I would at the Irvine location.
There is also an open gym here so whenever I can’t make the afterburn classes, I’m here. Great environment with people who train hard!
Be sure to check them out!

If you are looking for a High Intensity Interval Training based workout that provides you with strength, balance, & endurance — look no further. They have specific days where they target core muscle groups allowing you to pick and choose with days to go & also try something new.
The trainers here embody gurus of motivation & empowerment, constantly pushing each and every individual to reach their full capacity. Each workout is unique and crafted to target certain areas of your body you probably didn’t even know existed — but you will know the next day when you are walking around sore. These classes are meant for all fitness levels and offer a variety of alternate options to difficult workouts so you get the same results through a different process.
They pack so much awesomeness into just one hour, you will be in disbelief that you went through it all by the end. Even on days that you work on specialized groups of muscles, they make sure to add a bit of cardio to get a full workout. Their goal is to keep your heart rate high throughout to ensure a full cardiovascular workout.
What is the most memorable and unique aspect of this gym is the positive energy that radiates out of each and every single one of the trainers. Their motivations thrives from motivating others and it can easily be seen. Give the 12 a try and never look back!

This gym is awesome! I love how each day targets a specific muscle group. The trainers there a energetic and helpful!
This location also has a gym in addition to group training classes which is great to warm up in or to keep training after classes.
I would not hesitate to recommend this place to friends and family.

Great work out!!! I was in the area and my friend recommended The12 to me.
I like that it accommodates all fitness levels. They give you a full body workout and the fitness instructors are really positive.
Also, they have a body fat machine that’s upstairs so you can measure your progress (rather than just measuring weight which isn’t always accurate).
Unfortunately, I’m not in the area so I can’t come a lot… I will stop by whenever I’m in the area!

I have been going to The 12 now since around November 2015… sometimes more frequently than other times; Costa Mesa and Irvine. I was an athlete from grade school all the way through Division I College at MIZZOU! After graduating I was ready for a break from the day to day grind and laid off a bit but I’ve always continued to be active and run, lift, yoga, workout, etc. For the last year I’ve been pretty consistent with yoga and occasionally spin however I wasn’t getting any weight training /​cross training, etc. which I felt I needed.
I joined The 12 with my girlfriend and have been taking the Afterburn classes as often as possible and couldn’t be more stoked! The «Culture» at The 12 is what makes this place special beyond anything else. The Afterburn classes are going to kick your ass for 60 minutes every time… .period… but the Instructors, teammates in class and overall «be better than yourself» attitude is what makes this worth it for me every time! I’ve taken classes from all of the instructors (on purpose) and every single one has found a way to get more out of me than I thought I was ready to give!
The customer service at The 12 is superlative! Every instructor makes a point to introduce themselves to you, remember your name and make sure you introduce yourself and support others in the class! #NoHighFivesWillGetYouBurpees. As a prior athlete, the Afterburn classes allow me to get into my own head and push myself harder (than I would on my own) all the while knowing that I’m not alone and 40 others are suffering the same around me! The combination of weight training, body weight resistance, plyometrics, cardio movements and tempo is unmatched in my opinion!
Every time I leave I feel like I got my ass kicked but stoked I went! And every time I come or go someone at The 12 remembers who you are and is there to support you being a better you! I would recommend The 12 to anyone and have already recruited others! #ThisIs40

If you are looking for a gym that is going to push you to get in the best shape you can, look no further than The 12!
The 12 offers 60 minute targeted Afterburn classes, nutrition coaching, amazing trainer and great music. Afterburn refers to the fact that you continue to burn calories long after the workout is through. Each day of the week is built around a different muscle group. No two workouts are ever the same, which adds another level of excitement to each day! The only thing you know for certain when you walk into the group training room is that you are going to leave drenched in sweat from a killer workout.
The class begins with one of the elite master trainers walking the group step-​by-​step through each exercise and demonstrating the proper form for each, all while answering any questions along the way. The trainer and music keep the party going and will keep you motivated throughout the entire class and push you to burn out those extra reps that you did not think you could give.
The sense of community and inclusion at The 12 is what keeps me going back day after day. Each trainer will take the time to greet you as you walk in and congratulate you on your way out for smashing your workout. They take pride in what they do, which is infectious for everyone in class.
You are going to lift heavy, you are going to work hard, you are going to get in the best shape of your life and you are going to love it! First three classes in a week are free, what are you waiting for?! See you at The 12!

I’ve been going to the 12 for just over a year and it was exactly what I needed to get into shape. I go to the group classes as I’m not nearly motivated enough to do it on my own. The classes have a wide range of people at all levels and all the trainers encourage you to modify the workouts to fit your level while at the same time challenging you to give it your all for an hour.
When I joined the 12, I had an ongoing quad injury for several years that I wasn’t able to shake. I remember having to modify all the mountain climbers for the first week or two of going as my injury was so bad I couldn’t do it. All of the strength training has pretty much cured any pain I once had which I never thought would be possible and I’m so relieved!

I can not say enough about the 12 and the way it has changed my life. I have an all body workout in one hour! It has been amazing to work and sweat with amazing motivational trainers and people.
I was nervous walking in the doors the first time a year ago. It has been the biggest life changer. I am stronger. I am in control of my eating thanks to Nikki Boyd and I feel amazing.
Now I also have made some great 5 am friends and we kill it every morning!!! I also have motivated some people to join me and now a year later, I get to sweat. Grunt and laugh with the best people ever!!!
Thanks 12 and crew for making me stronger and better than I was yesterday!

I LOVE the 12! I’ve gotten my whole family into it. I enjoy the variety of classes and the team spirit environment.
Tricia Buck is my favorite trainer, but they are all great!!!

I’ve been an athlete all of my life yet I’ve never fallen in love with going to the gym. I get tired of the redundant exercises, same machines, same creepers pretending to be tough guys, and the whole vibe I just find distracting. Frustrated and unmotivated by my lackluster gym routine – I heard about the 12 through a friend and decided to give it a go. The 12 offers 60 minute group «boot camp» style classes and ive been hooked ever since my first session.
When I first stepped into the 12 I was blown away by the energy and atmosphere of the room. The trainers aren’t just trainers, they’re more comparable to coaches that are teaching you, pushing you towards your goal and encouraging your strengths. For me personally this coach-​athlete mentality is everything! The trainers really stress that everyone in the class get to know one another, thus offering a really unique team environment which I love.
Special shout out to Tricia, Matt, Ryan, and Orah for their constant high energy and impeccable knowledge – I stay inspired and excited to see you guys each day I come to class.
If you haven’t tried the 12, you should. Whether you’re a Beginner or a body builder, this class will get your body in tip top shape!

If you want someone to kick your ass with a smile on their face, this is the place. The classes are fantastic every time and the trainers are all so supportive and encouraging, and they all make you work! I’ve taken classes with Matt, Tricia, Orah, Keith, Ryan, and Sarah. They spend a lot of time teaching you to have good form to avoid injuries and they always notice when you’re struggling and will help pick you up to finish out the workout strong.
I can’t say enough amazing things about Matt and the noon class. It’s my absolute favorite. Don’t go, because I don’t want the spots to fill up. But it seriously is the best — a full workout in 45 minutes. I like it better because there aren’t as many long breaks for me to cool down, it’s just go go go the whole time. Plus, Matt is always so positive and welcoming.
You can tell the trainers really take pride in what they do and their gym — they are always making sure the area is clean and tidy for the next class, and when they are at the front desk, you’re almost guaranteed a smile when you walk in the door. Your first 3 classes are free and then they run specials pretty frequently so you can get discounts on class packages :)

Updating my review to reflect the awesome changes to the 12 and the way it’s been evolving to keep regulars like myself still guessing and getting a great workout!
I’ve taken every trainer here and they are all fabulous! I have never had a bad workout. The energy is so amazing and I feel like the trainers make an effort to get to know you and use your name to encourage you during class. Each one has their own special qualities that get me to their classes so I really suggest that you try and take a class with all of them! I also love that the trainers are very helpful in adapting the wo to you and your needs. Whether you be injured, just not feeling a certain exercise, or want to make it more challenging.
Bottom line– this place is great and one of a kind! Have not found a place like it yet!

I’m in la la la love! I joined the 12 two weeks ago, and I’ve only missed I think a day since I’ve joined. It’s sooo amazing and addicting and awesome, and I just LOVE!
I was doing boot camp for 5 years but took a hiatus and did yoga for a year. I really missed boot camp and the weight training though. A friend told me about this place so I decided to check it out. They give you three complimentary classes which is great so you can see if you really like it and if it’s for you. Every day is designated to work out different body parts. 2 weeks in and I’m hooked! When I bought a package, they had a 15% deal going on. I think they have deals throughout the year which is nice.
The trainers are also so so nice! My old bootcamp was a bust in this area, but the trainers at the 12 are so legit. I’ve taken classes with Sarah and Ryan so far and they are both sweet, help you with form, push and encourage you throughout class. It is boot camp so expect to be pushed and yelled at, but it’s all out of love. The trainers are really respectful of what level you’re at too, so they will never make you feel inadequate and will respect what level you want to work out at. The other people who come workout are also nice and give out positive energy.
The 12 is a really fun and comfy environment to work out in. Every workout I’ve done so far has been amazing and leaves me feeling energized and sore as hell! I can already see results which is great!
There is plenty of parking but I’ve never come during the rush hour evenings so not sure how tight it gets. I like this place too because the class cap is 30 so it never gets super crowded. You do have to remember to sign up to secure a spot. They also have a gym but that’s a different membership.
I’ll keep going to the 12 for as long as possible! So happy to have found this place :)