Nadia is such a competent trainer, keeping my workouts varied and challenging in just the right way. I have injuries that she competently works around, keeping me training hard enough to strengthen me, but not hurt me. I like the facility, everything I need there, and centrally located for easy gym runs when the mood/time strikes. She mixes science based testing to help me gauge my progress. I am doing really well at this gym. I highly recommend her for all ages. read more

This is a wonderful supportive and safe place for workouts and a variety of strength training. Nadia is a fantastic support and a knowledgeable coach. She knows how to push you towards your goals without browbeating you. Additionally she has a Bio Density machine to help build bone density and keep osteoporosis and osteopenia at bay. Check her out!! read more

I would like to warn anyone that uses the sauna in this gym that they should use infrared sauna eye protection glasses. Nadia did not warn me that they should be used and there were no signs posted to the effect. Since using this sauna last July I'm still suffering the effects of vision loss and eye aches. read more

I have been working out at Body by X for two months now. It is the most fun I've ever had working out! The bodies walking around in this fitness center are to be awed. Xavier and Nadia are the nicest people and have really fun ways to get you in shape. They also have a machine called the BioDensity which is really great for strengthening your bones in cases of osteoporosis. I love coming here and highly recommend it. read more

This place and its owners, Xavier and Nadia, are the real deal. There are lots and lots of trainers out there - only a subset know what they are doing - and only a subset of that subset of those are really worth your time. These two are beyond worth it. They become friends - hell, they become family. Although... I don't let my friends or family kick my ass multiple times a week, and I definitely don't let my friends or family talk me into dragging my ass to 5:30am spin classes... so I might have to reevaluate that part... read more

"I've learned that people will forget what you said, people will forget what you did, but people will never forget how you made them feel." This quote from Maya Angelou sums up Body by X perfectly. I really feel accepted and loved here. The staff is fantastic! Nadia and Teri do a phenomenal job and have gone out of their way to make sure my experience is golden. An interesting thing happens when you're surrounding by folks that care: you work harder and want to be there, even on the days when you'd rather not get out of bed. Body by X is super clean (they even use EO toxic free soap!), has a nice mix of high quality equipment, and instructors that really know how to kick your butt (see Teri, she's an awesome butt kicker). So, what are you waiting for? Let the transformation begin! read more

Yeah wow, I'm not sure where the person who gave this gym one star went but it could not have been Body By X because my experience was completely the opposite!!! X (Xavier) himself trained the living @#$%^& outta me!!! I was actually shocked on a number levels. #1. He got me, he actually got my number when most people never do. And he knew exactly how to "train" me to the best of my potential. #2. I thought I was a hard trainer. I thought that because I push myself physically on a semi-regular basis that I could handle his training with no problem. Ummm NO! #3. I was sore - really sore in a very good way, for 4 days afterwards!!! This is a fantastic gym and I had a fantastic experience. It's small and intimate and people say hello to each other!!! I love that! It's not a meat market and it's not uncomfortable. I plan on going back for training 3 days a week (OMG am I glutton for punishment or what?) read more

Went to this gym for only a month, got a new Job and schedule was changed. Very nice people, I was comfortable and happy here. Hopefully I can come back one day! read more

This is the most amazing, comprehensive personal training and skills development program I have have ever worked with. Not only are there the traditional "pumping iron" dead weights and machinery, but Xavier McClinton, the lead trainer and owner, brings a relentless " you can do more and you WILL do more" attitude to each person he works with. "X" , as he is known by all, is also an expert basketball trainer, and brings his will to win and " never give up" work ethic to a couple of local school basketball teams. This guy has no comparison as far as I'm concerned, and he turned my son Max's work-out life around, getting him to do things no one, let alone Max, thought he could do. RUN don't walk to Body by X --your sense of yourself will never be the same again. I love the guy. read more

Swoon. I love the aerials class so much I even pay the bridge toll to take it. GREAT stretches and good workout. So while I'm there I watch some of the trainers and think it would be good to add that to my work outs. They are positive, upbeat, motivating and challenging. But it doesn't feel like a gym you need to be fit just to go there. All kinds of bodies, ages, young kids doing basketball drills. Good energy all around. But I still love the aerials best. It's not silks - it's more like aerial yoga, but you get to try more tricks too. And who doesn't like a good trick!? Don't worry Nadia - I'm back soon! read more

Terrific gym with a wonderful atmosphere. Friendly staff, plenty of equipment and good energy. I talked to Xavier on the phone and in person and he was helpful and funny. Thanks for letting me drop in! Bram Wiley read more

Love this place! A really well equipped gym with just the friendliest people...; ) I actually have a hard time motivating myself to workout... Going to a gym like Body X just makes it that much easier to get to the gym.... The vibe here is so great I always leave in a much better mood than when I arrive! read more

I live about 7 hours away from their Body by X shop, and I wish I lived a lot closer to it. My wife and I try to get an Osteostrong treatment from Nadia whenever our travel takes us through their neighborhood. I had a personal training session from Xavier as well. Both of them are great people, "super like-able" (slang for super like-able), and absolutely competent in their work. The few visits we have had have been a real treat. read more

The person who gave one star to *BODY BY X* absolutely had to be thinking about a different gym. My positive, upbeat experience is the total opposite of what he reported. I'm hooked on BODY BY X !! BODY BY X is a warm and friendly neighborhood gym, just off Highway 101 in east Corte Madera. I love working out there! This grandmother finally decided to get in shape and boy, did I find the right place. X (Xavier) and his wife Nadia made me feel welcome from Day One, introducing me to other members for a personal connection. Plus they give great hugs for Hello and Goodbye! All the class trainers are good and very encouraging with newbies like me. No cranky, unsmiling teachers here! They give me positive feedback while I'm learning, which keeps me motivated. So far I've done indoor cycling, rowing, stretch, and yoga. Other, more advanced workout classes are offered too. The personal trainers, including award-winning X himself, are skilled at getting you to push beyond what you thought was possible, and finding the right workout mix for each individual body. In a very safe way. I've talked to several other members who have some pretty amazing stories of their own progress here ... about weight loss, injury recovery, bone-density-building, and otherwise. Their machines, and free weights, are all in excellent condition and the gym is very clean. Music from an awesome sound system is always on and fits each class perfectly. It's always a different mix. During non-class time the long movie sound tracks are ideal for individual self-directed workouts, whether on machines or free weights or stretching on a yoga mat. I'm so glad I found a neighborhood gym with personality! And no attitude!! I (heart) BBX !! read more

Took my group of au pairs to a aerial fitness class at this gym last night - SO MUCH FUN! Nadia was fantastic teaching first timers how to use the hammocks. I was so impressed by how well the group caught on. If you are looking for a fun way to get in shape, this is it. Great for families with teenagers - something fun you can all do together :-) read more

Great gym. Nadia and Xavier are super friendly and professional. Gym floor has all the equipment you could want and is clean and well maintained. Definitely recommend coming for the free trial workout and tour. I worked out on my own today, but I'm already setting up a personal training session, can't wait to get going and get in shape! read more

Five stars because it won't let me give more. As someone who hasn't worked out in literally years, I was a little nervous about joining a gym. That all went out the window the very second I met Nadia. She is so welcoming and encouraging, I can't even begin to describe it. Everyone is so nice, there's none of that snooty attitude I've found at a lot of other places. They really take an interest in actually getting to know you, and have built such a great little community. In my opinion, this is the only place worth going. read more

I hesitate to give away the secret of Body By X, but good gyms and teachers deserve it. I've been taking aerial yoga with Nadia and this woman rules. She's confident in her abilities and teaching skills. She is commanding, but not obnoxious. She's extremely supportive and also self-effacing (which I love.) Aerial yoga is less yoga and more strength training and acrobatics. It's not easy, but once you get the hang of it you feel like an absolute rock star. Nadia is the best teacher you could ask for. We're lucky to have her in Marin. read more

Body by X is not like any other gym I've been to. It's small, and the owners, Nadia and Xavier are warm and caring and want to make sure that everyone is doing their best and happy. They are always eager to answer questions and help. It is not a "scene" like so many other gyms, and everyone I meet there is nice. They've got the best state of the art equipment, and offer a wide variety of classes. I especially enjoy the Thurs night rowing class with Barry. It's a great workout for the upper and lower body simultaneously and Barry keeps it fun and interesting. I like it because It's a great way to get noticeable results in a short amount of time. read more

Hands down the best gym I have ever belonged to! It has everything from great trainers and excellent equipment to outstanding and unique classes. It's super clean, friendly and affordable. Leave all the pretense behind and you'll find a great community of people passionate about health and well-being. read more

Love this one-on-one, family-owned fitness center. I joined in January and continue to have great experiences. Xavier is a true professional and his wife Nadia is lovely and encouraging. I'm now addicted to spin It's a gym I enjoy going to as well as feeling that my personal fitness needs are heard and addressed! read more

this is a very nice small gym, with all you need to get a good workout. place is clean, people working here are nice and owners are very involved with their clients. this gym is in the industrial building, so space is limited, but very well utilized by gym owners. the trainers who are working there are superb, being personal trainer myself, i have to say that their trainers are very skillful and pay highest attention to their clients' needs. why 4 stars instead of 5: 1) lack of showers (only 2); no designated changing room; 2) no organized childcare in case you want to take a class and have no babysitter for that time; however, the place is VERY family friendly, you can bring your kids there anytime and, if your kids can look after themselves, they will be fine. better yet, let your kids to take a class along with you! read more

My family toured this gym a few months ago. Xavier was so friendly and helpful, easy to talk with, not afraid of our endless questions and concerns. I asked him to stay in touch with us until we were ready to start working out. Well, my family members decided to put their exercise plans on hold, and with Xavier's gentle reminders, I finally showed up for myself, by myself. I LOVE his cycle classes, his attitude and music are 100% motivating, his attention to detail/form/safety is excellent. So, if you are like me, and can find every reason not to work out, don't give up until you try this gym. I feel like I'm finally taking care of myself. Now for the rest of the family... read more

Body By X is an incredible community gym! I mention the community element because the owners Xavier and Nadia have worked with my company in many generous ways to promote health and wellbeing among those who otherwise might not have access. They are knowledgeable and dedicated to constant improvement - these are qualities I find to be very important in the fitness realm. -Tobi Lessem; Wholeself Health read more

X and Nadia are passionate about their business and it shows in the way they treat their clients, the condition of their facility, and their enthusiasm for motivating those around them. I am not a spin fan but make an exception for X's class as he keeps the energy high with great music and his infectious personality. Andre's TRX classes and sessions with Oliveyah always leave me exhausted yet energized, and feeling stronger than ever. Post-workout shopping at the BBX boutique is always an added bonus to my gym visit and BBX has a "small private gym where everyone knows you" feel that I love. read more

Thanks to the specific training program tools Nadia set up for me, I recently completed a 1/2 Marathon and had my best time for this distance. I was inspired by being injury free and enjoyed the training that I am now going do the NYC Marathon this Fall. Thank you for helping re-gain my fitness. It was only one year ago that I found your Gym. In one year, I went from being 20 lbs overweight...to running a 1/2 marathon and now have set my goal of running a full Marathon this Fall. Thank you Body By X for helping me work towards my weight loss and fitness goals! It is easy to say age and metabolism are working against us. However, with your expertise and specific goal oriented training techniques you have helped me realize we always have the ability to be our best if we are willing to learn and work for it. http://www.getfitmarin.com/ read more

Equipment is always in excellent condition, gym is always clean and organized, friendly staff, what more could you ask for. I love this place! read more

Amazing, unique place. Genuinely welcoming and warm, no matter what your age, shape or size. I'm an unfit mother of 3, including twins, in desperate need of Shaping up. They truly have the best quality fitness class instructors you could hope to find. So far, I've tried rowing. Stretch and flex, spinning (low intensity) and fly gym. The owners have clearly gone out of their way to find the best of the best for all their classes. It really helps that the owners take a genuine interest in their clients - unlike any gym I've ever joined. An added bonus is that, unlike anything else in Marin, this place offers great value for money. wish I'd found Body by X sooner! read more

My boyfriend and I have been Body by X members for several months now and it's our favorite gym ever. It's small, clean, well-equipped and friendly. The TRX classes are phenomenal. Xavier and Nadia are welcoming and fun, always happy to answer questions and celebrate success. I get high fives when I show up and it's noticed when I don't. I've even gotten an occasional friendly text saying "Hey, we miss seeing you," or "There's a great class happening tomorrow. Would love to see you!" Bottom line: If you're looking for a personal, friendly gym with highly competent trainers and a community atmosphere, this is the place! read more

I joined this gym and am glad I did. I am taking the spinning, weight training, and Pilates classes, and the instructors are competent and enthusiastic. There are several personal trainers around, and the owners, Xavier and Nadia, are omnipresent, caring, and knowledgable. It is a family gym, with men, women, and some children around. The facilities are complete, and the ambience is friendly and personal. I highly recommend it. Nick K. read more

Clean gym, state of the art equipment, awesome trainers, friendly and fun!!

This is a great place to go when you want to get in shape AND be a part of a healthy, friendly community. Xavier and Nadia are people who genuinely care about the progress and overall well-being of their clients. I don't know any other trainers or fitness centers that could have their members excited to work out at 5:30 in the mornings, but Body by X definitely did that for me and numerous other people. I would recommend this place to anyone who's looking to improve their health and meet a lot of great people at the same time! read more