In 2010, we opened Body By X Skill Development & Training Center to help people reach and maintain their fitness goals in a friendly, fun environment.  Our belief is that everyone and every body is unique and therefore everyone's fitness program should be unique as well!  Our 4,000 square foot facility in Corte Madera has state-of-the-art equipment, the largest commercial infrared sauna in Southern Marin and a welcoming environment that puts someone new to a gym completely at ease and makes a gym rat feel right at home.  Body By X also has a Power Plate and the only bioDensity device in Marin.  bioDensity is the first non-pharmaceutical solution for building bone density and reverses osteoporosis and osteopenia.  Body By X is leading the movement to reverse low bone density in people of all ages.  Body By X also provides motivating, fun and challenging classes including the ONLY rowing class offered in a fitness center in Marin, Rhythm Ride with X--an indoor cycling class like NONE other that will have you feeling like you're dancing on a bike, and Aerial Fitness--a challenging workout using swings suspended from the air.  

All of these great offerings come at a terrific price!  We believe everyone should have access to affordable exercise!

We created Body By X to meet the needs of those in OUR community who want a smaller, more personal space to work out.  We're like NO other fitness center, and we believe, as all of our members do, that we're the best in Marin.  

Keep reading to learn how we're changing the way people think about fitness!

The Body & X!



THE "X" IN BODY BY X...and the body too!

Xavier has been a personal trainer for over 30 years. His vision for Body By X was to create a space where kids and adults could overcome their physical and emotional fears and improve their self-esteem. Known to all as "X", Xavier's athletic process as a kid had him heading towards the NFL but a serious knee injury in his late teens thwarted his plans. Being an athlete led Xavier to the gym and he began his career in fitness on the sales side. He quickly realized, however, that to achieve long-term success, people needed more than just signing a contract. So, he decided to become a personal trainer. Since then he's helped hundreds of people reach their goals and sustain a healthy lifestyle. Over the years, Xavier has learned not just to listen but to REALLY HEAR the needs of people of all ages. It's this ability that helps him encourage people to move beyond their perceived limitations.

Xavier was named Best Personal Trainer in San Francisco's Bay Guardian's Best of the Bay 2010 Readers Poll . He has coached boys and girls CYO and AAU basketball teams to championships and many tournament wins and is known for his work with kids and youth athletes. His experience as a youth athlete and the wealth of knowledge gained over the years as a trainer make him uniquely qualified to work with kids. But it is his heart, enthusiasm and passion that turns a B athlete into a star. These same qualities have helped men and women of ALL ages build confidence and reach their goals.

Xavier is an extraordinary trainer whose smile lights up a room and whose energy is unsurpassed.



Nadia is a personal trainer and teaches our Aerial classes, Buns & Bellies and the TRX part of our T-Row-X class! She also manages the business side of Body By X including marketing and community outreach. Nadia has worked in advertising, retail management and as a project manager for a software company. She has a master’s degree in psychology and all of these experiences have prepared her well for gym ownership!

What makes Nadia's contribution to Body By X so special though, is the fact that she was gym phobic until the age of 38. So gym phobic that she'd never been to a gym! Until...she met Xavier!

Xavier and Nadia met a a party held by a mutual friend. Neither was interested in a relationship but Nadia felt an instant and strong connection to Xavier and when the evening ended she had an idea! She decided that the only way to get Xavier to feel the same connection was to hire him as her personal trainer!

A week later she found herself on a treadmill at 6 am, warming up for her first personal training session. Over the next few months, Nadia fell in love with strength training. It gave her so much internal strength and confidence. She also fell in love with Xavier. And fortunately, he fell in love with her!

When Nadia and Xavier decided to open a fitness center of their own Nadia knew she wanted to create a space that was welcoming, safe and fun. Xavier helped her change the way she thought about fitness and she wanted to do the same for others!