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Strong Foundations

Balanced Birch Studio engages students in authentic instruction in Classical Pilates and the GYROTONIC EXPANSION SYSTEM® through hands-on, personalized, boutique instruction for clients of all abilities. 


Balanced Birch Studio focuses on injury prevention, rehabilitation and strength training through integrated movement coaching. You will receive a one on one personalized program, targeting proper alignment, breath, and joint mobilization/stabilization, to build a dynamic state of body awareness and mindful personal connection. 


Balanced Birch Studio offers flexible scheduling to accommodate a variety of client needs. Our studio is a comfortable and warm environment committed to building community. Clients leave feeling inspired and prepared to take on new challenges!

Balanced Birch Studio is a Training Center for Classical Pilates USA™  Teacher Program which is operated by U.S. Pilates LLC™. Find out about upcoming trainings and seminars by visiting



Studio Founder, Lead Instructor

Mary Ellen Liacos is the Founder and Owner of Balanced Birch Studio. She is a Certified Classical Pilates USA™ and GYROTONIC® method instructor with 10+ years of teaching experience. She has worked with students of all levels and abilities, specializing in youth and geriatric instruction. Mary Ellen has extensive experience training athletes, particularly pre-professional figure skaters and dancers. She has deep knowledge coaching clients with ALS, Parkinson’s, and those who are postpartum or returning from surgical rehab.


Raised in New Hampshire, Mary Ellen moved to Boston to pursue her dance career at the age of 17. She trained at Boston Arts Academy and The Boston Conservatory where she was first introduced to Pilates. Mary Ellen graduated from UMASS Boston with a bachelor's degree in Women’s and Gender Studies and has been recognized for her work in arts and social activism. She has worked with several non-profits in Boston that raise social consciousness. 


Mary Ellen continued her Classical Pilates™ training through the United States Pilates Association® LLC, working with notable educators such as David Freeman, Brett Howard, Clare Dunphy, Peter Fiasca, Iwalani Kaluhiokalani, Sheila Mello, Nora Gomez-Dears, Jennifer O'Mara and Cary Regan. She is now a Teacher Training Center Director through Classical Pilates USA™. She is certified in the GYROTONIC® method, studying with Karen Burka, Kathy Van Patten, Martha Mason and Iwalani Kaluhiokalani. Mary Ellen currently dances with Anna Myer and Dancers/BeHeard.World and Continuum Dance Project. She incorporates her training in dance with her Pilates and GYROTONIC® practice; integrating these methods through instruction at Balanced Birch Studio. 



Caitlin was introduced to Pilates in 1993 and started teaching Pilates in 2016 after a 16 year career at the Museum of Fine Arts, Boston. Caitlin received a Master’s Degree in Modern Dance studying under Viola Farber at Sarah Lawrence College in 1996. Caitlin completed her Balanced Body Comprehensive Pilates Instructor Certification training through Boston Body Pilates with Zayna Gold. Caitlin is a PMA Certified Teacher. Caitlin is currently working towards her Classical Pilates USA Teacher Certification with Balanced Birch Studio Training Center.



Adrienne Craig-Williams



Adrienne (she/her) recently moved to the Pioneer Valley after living in the Hudson Valley and New York City. She has been an enthusiastic GYROTONIC® practitioner since 2016, and is a certified GYROTONIC® Level 1 Apprentice. 

Adrienne came to Gyrotonics to recover from an injury and address congenital hip issues. Gyrotonic Exercise has changed the way she moves through the world and has opened up possibilities for movement which she thought were lost! Her goal for her clients is to decrease pain and tension, strengthen their mind-body connection and move confidently about the world! 

In her free time, she enjoys board games, reading, math, and is also a high school math teacher! Adrienne is a GYROTONIC® enthusiast and is looking forward to sharing her experience with others!


In-Studio apprentice

GYROTONIC® is a registered trademark of Gyrotonic Sales Corp and is used with their permission.


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