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STWI Team Members
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STWI Headquarters - Chandler, Arizona


Marlene Riggs, STWI Administrative Consultant

Marlene has been with the STWI since August of 2011.  She is the person we can count on to ensure the Institute's Headquarters Administrative Division runs smoothly. Overseeing everything from customer relations to student records she runs a well-oiled machine.  Marlene has been with the STWI Team since 2011. She serves as a  "Right-Hand Girl" to Ann & Chris Frederick, a "Jill of All Trades" with an impressive bag of tricks, a quick smile, and endless patience.  In addition to her work with the STWI Marlene holds a degree in Mind-Body Transformational Psychology and Certification Mind Body Coaching and Sports Hypnosis with her own practice in Arizona.



Kristen M Ernst, STWI Communications Consultant

Kristen holds a Bachelor of Fine Arts in Visual Communication with emphasis in Computer Imaging from Northern Arizona University. Kristen's background is primarily in graphics, web design and photography, and has also held positions within the Corporate arena in technical writing, business analysis and compliance. In 2019, Kristen certified in Fascial Stretch Therapy Level 1, 2 & LifeStretch, and looks forward to training with the team further in 2020. Kristen joined the STW team in 2015 with an abundance of wit, passion and creativity and highly enjoys working in the world of fascia!




STWI Canada


Kevin Darby, Director of STWI Canada

Kevin is the founder of DTS Fitness Education and co-owner of Stretch to Win Canada.  He has been involved in structured physical conditioning programs for over 25 years.  He was a multi-sport athlete and represented Canada internationally as a member of the Canadian Military Pentathlon Team.   He has had a long and successful career as a leader in the fitness industry. He has been a head coach, personal trainer, wellness team leader for a 7500+ member police service and has developed multiple successful education programs.  He has worked with general population clients, amateur, Olympic and professional athletes in major sports leagues across North America.  He holds a B.Ed. degree, was a member of an award winning research team lead by Dr. Stuart McGill and was the canfitpro World Fitness Expo - Canadian Fitness Presenter of the year in 2014.   His core belief is knowledge is not power, it is the ability to apply knowledge that makes it powerful.


Lisa Wong, STWI Canada Administrative Consultant

Compassionate, with a natural creativity, Lisa fits the role of Institute Administrator for our Canadian Division to perfection. Prior to joining STWI in 2013, Lisa worked as Senior Marketing Director for one of the top movie theater chains in Canada, Famous Players, and later Paramount Pictures.  With two very active children at home, Lisa is the master of organization and balancing work and home life. As a previous entrepreneur of a wedding planning business Lisa has an innate sense of quality customer service.  She is your "go to girl" at STWI Canada.