MOSSA, also known as Body Training Systems in the US and Canada, has a long and storied history of inspiring millions of people to MOVE with health club ownership in the 70’s and 80’s, with the introduction of The Original STEP that launched the step fitness craze in 90’s, and today with professionally developed group fitness programs for health clubs worldwide.

MOSSA is honored to be selected Best In Class by Microsoft to provide workouts on Xbox One’s new online service, Xbox Fitness. Consumers can now experience the MOSSA workouts with instant, personalized feedback, right in their home. Xbox Fitness will optimize every workout with immediate feedback on form, power, and heart rate with the all-new Kinect, featuring Muscle Mapping, Power Gauge, and Pulse. Xbox Fitness technology combined with MOSSA’s programming expertise make these the most ideal home user workout experiences.

MOSSA is the most respected developer of professional, high quality, enjoyable group fitness workouts in the health club industry today. Spearheaded by Cathy Spencer-Browning, VP of Programing and Training, MOSSA has the most comprehensive and thorough Program Development process. Over 300 hours are poured into each and every workout to ensure the participants’ enjoyment and success. This includes an unsurpassed, methodical Testing Phase that consists of 150 test classes for just one workout. This Testing Phase guarantees the programming of music and exercise is motivational, safe, and effective. With the diligent work of the MOSSA Program Development team and SAIFAM, their exclusive music supplier, to customize and engineer music, MOSSA has the best music to motivate participants in their workouts.

MOSSA offers nine professional group fitness programs for health clubs called Group Active, Group Blast, Group Centergy, Group Core, Group Groove, Group Kick, Group Power, Group Ride, and R30. MOSSA now offers four professional home workouts for Xbox Fitness, only on Xbox One, called MOSSA Core Workout, MOSSA Fight Workout, MOSSA Groove Workout, and MOSSA Power Workout. MOSSA is working closely with the Xbox Fitness team to launch more programs in the near future.


The '70s & '80s

MOSSA’s journey began in the 1970’s with the drive, passion, and spirit (not to mention frustration) of our leader, Rich Boggs. After 10 years of working for corporations including Proctor & Gamble and Bristol-Myers, Rich’s tremendous entrepreneurial spirit was too controlled, and his health and weight were out of control!

Rich made the decision to get moving! His desire for positive change led to the development of Sportslife: The Science of Good Health. This chain of seven full-service health clubs in the metro Atlanta area serviced over 45,000 members. The experience of owning and operating clubs for nearly 15 years provides a strong foundation for the success of the MOSSA professional club and consumer programs today.

The '90s

In the late 1980’s, a new phenomenon was taking shape in the Sportslife clubs – aerobics classes on wooden benches. To capture this excitement and share it with the world, MOSSA, then known as The STEP Company, developed The Original STEP. In the 90’s, over 13 million people a week were part of the step fitness craze as MOSSA introduced The STEP in over 25,000 clubs in the US and Canada and many more worldwide. The Original STEP is now a staple of the fitness industry, used by millions of participants each week.

The 2000s

In the late 90’s, MOSSA, then known as Body Training Systems, began distributing group fitness programs from a New Zealand company to health clubs in the US and Canada. In 2005, MOSSA launched their own professionally developed programs, a comprehensive instructor training system, a sales and marketing system and an extensive management system that includes software and resources to enable health clubs to maximize their group participation and be more profitable.


MOSSA’s goal is simple…to get 50 million people moving each week through our top-quality health club partners and Xbox Fitness. We pursue this goal with a never-ending commitment to creating the best group fitness programs and home workouts.