Adult, Family & Student Memberships - Classes - Fitness Consultations & Evaluations -
Personal Training - Low bone density solutions including bioDensity - Infrared Sauna - 
Athletic Training - Power Plate - Cycling Studio - Youth Training (including equipment just for kids) - Basketball Court - Slackline Training - Balance & Flexibility Tools & Training -
Custom Fitness Packages - Showers

Aerial Rhythm, a Creative Fitness Program for
Kids ages 8-13 begins May 8th!
Tuesdays & THursdays: 4 to 5:15 pm
4-week Session (8 meetings) $299

Why Aerial Rhythm?

  • Kids love it!  Hammocks suspended from the ceiling mimic the feeling of flight
  • Promotes positive body image
  • Increases self-esteem
  • Builds strength
  • Choreographed performance at the end of 4-week session
  • Call 415-945-9778 to register or click HERE

Summer Basketball & Athletic Training

Body By X is offering Basketball Skill Training & Conditioning this Summer for girl and boy athletes ages 10 to 18.  Participants will be challenged both mentally & physically  as they work on shooting, defense and explosive training.  Xavier will help your young basketball player become a complete player.  

Call NOW to reserve your individual or group session. 415-945-9778


We offer adult, Family & Student Memberships!

A 1- year GOLD membership at Body By X includes:

Unlimited classes:

  • Aerial Fitness, Aerial Play & Intro to Aerial Fitness
  • Rhythm Ride with X
  • TRXtra
  • Stretch to the Core
  • Group X
  • Fitness Rowing
  • Camp X
  • Buns & Bellies
  • T-Row-X

Use of our:

An introductory session on our bioDensity device to increase the density of your bones, tendons and ligaments.

Not interested in taking classes but prefer to work out on your own and use our state-of-the-art equipment, infrared sauna, Power Plate and more?  We have a membership option for you!

Email us @

Not a member yet? Drop in for $25 a class or $25 to use all aspects of our facility and see how we're different from other fitness facilities in Marin County. We promise you'll love it! Be sure to check out our schedule to see when our fitness classes occur.  We look forward to seeing you soon.


We have the best personal trainers in Marin County!  

You can view their profiles here. Personal training fees vary depending on the trainer and how many sessions you purchase. 

Personal Training Information

Please feel free to call us with any questions.



The Non-pharmaceutical solution for building bone and joint density.

The bioDensity system safely aids in increasing bone density by stimulating the body’s natural bone generation process.  Based on existing science of bone compression, bioDensity applies optimal biomechanics and increases density in bone, tendons and ligaments.

See the Video Below

The Surgeon General Chapter 9 States that increases in bone mineral density are stimulated by maximum loading of the musculoskeletal system.

Infrared Sauna Marin

Infrared Sauna Use @ Body By X Skill Development & Training Center

Body By X has the largest, commercial, infrared sauna in Southern Marin!

Infrared saunas have been proven to help with arthritis, detoxification, stress reduction, lowered blood pressure, weight loss, pain relief, improved circulation, psoriasis and other skin conditions, fibromyalgia and aging!

Recent research shows that increasing your core temperature for short periods, as is done by using a sauna, may offer dramatic improvements to your athletic performance. It does this using a concept called “hyperthermic conditioning”. It has multiiple positive effects on your body from increased endurance to the growth of new brain cells.

Email us @ if you have questions regarding our infrared sauna.


If you're considering introducing your son or daughter to training outside of his her sport please consider Body By X Skill Development & Training Center. Our trainers have years of experience successfully developing young athletes not just into better athletes but into young men and women who are stronger physically, mentally, and emotionally. We challenge them to grow on all levels. We teach them to respect themselves and others. We show them that exercise is a metaphor for life and we give them the discipline it takes to improve. We build well rounded student athletes. Our athletes learn to love exercise! Let Body By X help guide your young athlete on their journey.



As the global leader in whole body vibration technology, Power Plate redefines optimal health and wellness equipment for every age and ability.

Power Plates are engineered to apply the science behind the body’s natural response to destabilization. The Power Plate platform uses a consistent, safe and controlled level of vibration that moves in three directions (up and down, front and back, and side to side).

From rejuvenation and anti-aging treatments to rehabilitation and therapeutic massage, Power Plate provides exceptional results.

Whether you want to look better, feel better, or play better, Power Plate is the solution.

It’s not fiction—it’s science. More than 200 research studies conducted on whole body vibration have shown, when used regularly as part of a healthy lifestyle, Power Plate can help provide numerous wellness and fitness benefits, including:

Strength—   Improves muscle tone, builds explosive power and endurance.

Flexibility—   Increases range of motion, coordination, balance and stability.

Circulation—   Improves and increases blood flow to strengthen the cardiovascular system.

Weight Loss—   Reduces body fat and enhances metabolism.

Cellulite Reduction—   Diminishes the appearance of cellulite.

Alleviate Pain—   Promotes faster recovery of damaged muscles and tendons, decreases pain and improves joint function.