The owner and founder of our gym, Frank Barry, has been interested in fitness all his life. A wrestler and football player in his youth, Frank has taken his passion for sports into his adult life, working to help others achieve their fitness goals.

To pursue his dream of spreading his passion for fitness to others, Frank started NDB Fitness. NDB is named after Frank’s children and stands for the gym’s founding principles: Nutrition, Determination, Benefits. Sign up for one of our classes to see them in action!

We offer a range of fitness classes that target all muscle groups to produce real results. Our experts and trainers have over 15 years of experience and are here to help you reach your fitness goals. Make NDB your new gym in Tewksbury to get in shape and become healthier and happier.



NDB Fitness is a 5 star operation. Instructors are Very Professional. I love the bootcampclasses! Overall strengthening and conditioning to help me to achieve my highest level ofstrength and wellness. They are THE BEST

I joined NDB a little over a year ago and never looked back. The owner and instructors are topnotch - talent, compassion, experience, dedication, and knowledge are just a few words todescribe them. Challenging classes to whatever level you are at, a clean gym, with apersonalized feel are some of the great qualities of this gym-try it!!!!!!

I am 66 years old. 8 months ago I was 40 lbs overweight and completely out of shape. I joinedNDB for a 16 week challenge and have never looked back. I have achieved not only my weightloss goal but have gotten my active life back. My endurance, strength, flexibility have allincreased. What makes this gym special is the small classes and the amazing trainers who getto know you, push you and modify everything so that it’s safe and appropriate for you. Theclasses are hard but so much fun. In 30 minutes 3 to 4 times a week the changes made areamazing. And every class is a little different so it never gets boring. There are also specialclasses that have expanded my fitness interest including kickboxing and step classes. I’m anewbie but the teachers are great, and I’ve enjoyed learning. I highly recommend NDB. It hasgiven me back my life.