Stow Shopping Center, Stow 978.897.5300
M-Th 5AM-10PM F 5AM-9PM Sa,Su 7AM-8PM

Stow 2015

Meet Our Trainers

Picture from left to right ; Jenifer Gershman, Chris Trefry, Ted Oxholm, Tammy Spear, Colleen Moran

Chris Trefry
Fitness Director, Certified Strength & Conditioning Specialist

B.S. Exercise Physiology , Minor in Nutrition, UMASS Lowell

NSCA Certified Strength & Conditioning Specialist
CrossFit Level 1 Instructor

Motivational Statement:
By being certified as a strength and conditioning specialist, Chris understands the importance of incorporating a personalized resistance training program into your workout routine. Not only can resistance training increase muscular strength and endurance, but also improve the ability to perform activities of daily living, which can lead to a stronger, healthier body and a prolonged life.

Email Chris with questions at

Tammy Spear
Certified Personal Trainer, Certified Nutrition Specialist

A.E. Johnson & Wales School of Technology


NASM Certified Personal Trainer
AASDN Certified Nutrition Specialist
Kettlebell Athletics Certified Kettlebell Instructor
Currently studying for ACE Clinical Exercise Specialist Certification)

Motivational Statement:
As a trainer, Tammy prides herself on building programs that will meet or exceed the individuals goals; making sure that clients have a safe program that will make them healthy and happy is her only goal.

Email Tammy with questions at

Colleen Moran
Certified Personal Trainer

Lasell College

ACE Certified Personal Trainer

Motivational Statement:
Colleen believes that through hard work and determination people can achieve goals they never thought possible.  One of her favorite quotes by Tommy Lasorda is "The difference between the  impossible and the possible lies in a person's determination."  As a personal trainer she believes that if someone has a goal in mind,  and they put their best foot forward and give 100% they will follow through with their goals. Through goal setting she has watched clients crush their initial goals and set the bar higher and higher with each goal.

Email Colleen with questions at
Jenifer Gershman
Certified Personal Trainer

B.A. Psychology, Brandeis University
M.S.W. Clincal Social Work, Boston University

ACE Certified Personal Trainer
Mossa Group Ride & Group Active Instructor
TRX Suspension Training Certified
Kettlebell Athletics Level 1 Certified

Motivational Statement:
Jenifer can enhance your quality of life by developing effective workouts that will help you achieve new levels of positive physical change. She is a motivating and dynamic coach that will help you achieve your results.

Email Jenifer with questions at

Zac Loughlin
Certified Personal Trainer


B.S. Physical Education: Applied Health and Fitness

- Athletic enhancement
- strength and conditioning
- injury prevention technique
- flexibility and range of motion enhancement
- high intensity circuit training
- agility/footwork/speed training  
- long-term program planning

My favorite hobbies include:
- exercising
- yard work/landscaping
- walking my black lab
- playing pick-up sports games
- cooking

I was born and raised in Maynard, MA and attended Maynard High School. During my time there I was a three sport athlete (football, basketball, and baseball). My love for sports started at a very young age. As I got older I realized the importance of exercise and wellness, which lead to my career choice. As I entered my freshman year of college I was originally an athletic training major, but I quickly switched majors to applied health and fitness. I still wanted to work with athletes/active populations but I wanted my work to prevent injuries from occurring, rather than treating injuries after they occur. Later, I was hired as a strength and conditioning intern for two years at a high end training facility in Massachusetts. During my time there I trained many athletes from beginners to professionals. Personally, I have worked with professional athletes in the weight room and out on the field and have helped them reach life long goals. In the summer of 2015 I applied for the personal training position at Global, where I have been a member for the past 8 years, and I was hired in the early fall. I could not be any happier working with the people who sparked my love for health and fitness!

Favorite Exercises:
1. Hang Clean - the hang clean is the perfect mixture of intensity and finesse. This hip-dominant movement will improve your power output as well as your force production. It is perfect for high impact sports. Also, the hang clean can be used as a muscular endurance exercise with a lighter load and a high repetition scheme. Most importantly, you should only perform the hang clean if your form is checked and approved by a fitness professional!

2. Pull Up - the pull up is a measure of pure strength. Nothing hits the lats as hard as a pull up, when done properly. I like the pull up because it requires little equipment and can be done virtually anywhere. It is one of the more challenging upper body exercises out there!

3. Pistol Squat - the pistol squat is a complex movement that requires focus on balance and strength. I love this tough unilateral exercise because it isolates each side of the body. This eliminates compensation patterns that may be over looked when performing a squat with two legs. Also, the pistol squat is another body weight exercise that can be done anywhere!

Motivational Statement:
As an up and coming fitness professional I strive to work as hard as I ask my clients to. I will never give a client a movement or exercise that I have not tried myself. I will go out of my way to ensure that all of my clients are exercising with proper intensity, proper form, and proper motivation. Most importantly, let's make fitness fun together!

Email Zac with questions at


Global Fitness Center Stow, Stow Shopping Center, Stow, MA 01775, 978.897.5300, Email Us
Copyright 2015. Site design by Susan K. Bailey Marketing & Design, supported by SiteApexWeb Mail Login | Terms of Use | Privacy Policy