Meet the Staff…

We know that the quality of the instructors makes a difference in your child’s experience. Over the years we have interviewed hundreds of highly-qualified, energetic & patient instructors, and have selected only the finest. We are confident that your child will look forward to spending time with all of our instructors at any level! Our 40-year reputation has been built one child at a time and we intend to keep it that way! Want to meet our instructors before you make a commitment? Stop by the facility and say “Hi” to them.

Jamison Loizeaux
Owner / General Manager

Jamie was a member of the Illinois State Gymnastic Championship and Record Breaking Team and was an Elite All American Gymnast. He received a B.S. in Kinesiology at the University of New Hampshire where he was a Div 1 NCAA diver. Jamie is a MA Licensed Nationally Certified Athletic Trainer and has earned an MBA. He has thoroughly enjoyed working with kids and teaching/coaching gymnastics since the early 90′s.

Eric Loizeaux
Manager / Team Director / Wrestling Coach

Eric has vast experience in gymnastics and wrestling, including 4 yrs as a Div 1 athlete at Northern Illinois University and was the Illinois Gymnastic Conference Champion. His enthusiastic love for teaching/coaching kids evolved while completing his degree in Phys Ed., coaching at summer camps & local kids wrestling clubs, teaching tumbling at the IL Motor Development Research Lab, and leading his church youth group.

melissa_web3Melissa Joyce
Office Manager

Melissa has been involved in the sport of gymnastics for most of her life.  During that time frame she has done it all; coached, instructed, managed, directed, etc.  Her lifelong passions have always been figure skating and gymnastics.  Little known fact: she competed against Nancy Kerrigan when she was 6 yrs old, and won.  She earned her BA in Psychology from Regis College and her MEd in Curriculum and Instruction from UMASS Lowell, after which she taught in the public school system.  Melissa is married with four children, of whom 2 compete on the GAB Team.

rebecca_web3Rebecca Mullen
Gymnastic Instructor / Team Coach

Rebecca loves fitness, through and through.  Along with gymnastics, she is also a Crossfit L1 trainer and enjoys distance races such as the Spartan Race and Tough Mudder. After competing heavily in gymnastics throughout her childhood she attended Cornell University where she received her BS. After working in engineering 6 yrs she has fully transitioned back into the sport of her youth. She loves working with kids and helping them excel athletically and is excited to start her new adventure here at GAB.

Tracy Massa
Gymnastic Instructor / Team Coach

Tracy has been  both teaching and competing in gymnastics for over 15 years, including being a member of the University of Wisconsin-Whitewater Women’s Gymnastic Team, where she also received her BS in Health & Human Performance with an emphasis in Recreation. She has experience teaching gymnastics from the youngest recreational athletes up to the collegiate level.

Mary Marino
Gymnastic Instructor

Mary has spent most of her life in cheerleading/gymnastics and professional dance training. After earning her Teaching Certification in Early Childhood Education at Mount Wachusett Community College, she went on to teach Pre-school and Kindergarten classes. GAB allows her to combine her appreciation for dance and gymnastics with her love of teaching children.

Robert Zhang
Gymnastic Instructor / Team Coach

Robert grew up in Acton and recently returned from serving our country with the Army Reserve in Afghanistan; we are so excited to have him home safe.  He loves teaching kids and is very passionate about teaching them gymnastics.  In his off-time he enjoys playing soccer, going to the beach, and is working towards a degree in Education. Robert is bilingual in English and Mandarin.

Cathleen Vierstra
Gymnastic Instructor / Team Coach

Cathleen brings over 30 years of gymnastic experience as a gymnast, coach and manager.  Member of a back-to-back State Championship Team, awarded 4 MVP’s, Cathleen studied Communications & Advertising at the University of Southern Maine where she was also a dancer, ran cross country and founded the gymnastic club.

melissa_web3Melissa Dehoyos
Gymnastic Instructor / Team Coach

Melissa has been coaching gymnastics and cheer for 8 years.  She has spent most of her life investing in children, whether it was as a church children’s director or the Girls Scouts. She has come to GAB in order to combine her appreciation for gymnastics with her love of teaching and coaching children. She looks forward to enthusiastically helping her students achieve their gymnastic goals.

Dev Rangachari
Gymnastic Instructor / Team Coach

Dev comes with enthusiasm and lots of energy.  He loves educating kids, which is why he currently attends Framingham State University where he is studying to be an Elementary school teacher. His goal is to be a third grade teacher and has worked as a student teacher right here in Acton.  In his free time, Dev likes to draw/sketch, hike, read a good book, and spend quality time with his three dogs; he is also a hairdresser on the side.

Kristen Doyle
Gymnastic Instructor / Team Coach

Kristen has been involved in gymnastics her entire life, both as an athlete and coach.  She comes to GAB with passion to teach children of all ages and wants to teach them how to love, engage, and excel in the sport.  Kristen attended Northern Essex Community College where she earned her Associates Degree in Radiologic Technology. Even though being a Radiologic Technologist is fun, she can never quite stay away from gymnastics for too long! She looks forward to coaching and helping the children at GAB grow and succeed.

Christine Reiling
Gymnastic Instructor

Christine is a Certified Personal  Trainer and has been involved in athletics all her life. She was a sprinter for almost 20 years, and competed, trained and taught in the highest levels of dressage. For the past 13 years she has been coaching Track & Field to kids of all ages. Christine has a Master of Science from the Technical University Darmstadt, Germany, and is bilingual in German and English. She is excited to lend her many years of teaching and coaching kids to us here at GAB.


“Gymnastics class is the only thing my 2 year old will leave his early morning cartoons for.”
    – Littleton Parent

“When we first started here my daughter was very unsure physically, very timid.  But gymnastics has done so much for her in the way of self-esteem and building confidence in herself.”
    – Westwood Parent

“Our twins had  a blast at their party here, the staff really kept them moving.”
    – Acton Parent

“Wow, your teachers have so much energy!  Our son loves it here!”
    – Concord Parent

Treats for Our Troops Candy Drive

Thank you to all the GAB families that contributed to our Annual Treats for Troops candy drive.  Total amount of candy donated was 545 lbs,  shattering last year’s record of  446 lbs.

Our Goal

“Our goal is to provide a gymnastic program that teaches children and adults that learning is fun. We offer exciting programs, taught by our enthusiastic, caring instructors, for children age 1 through adulthood. Our fun, clean, safe, high-energy environment develops happy, healthy and responsible children.”