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MPower is New England's most unique new fitness club.  Featuring traditional and therapeutic boxing, circus arts and flexibility, surgical pre/post rehab, personal training, and group classes.

Power your fitness goals at our new location in Deep River.

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David entered the fitness and conditioning world after meeting with a coach and mentor at The Boys Club at age 13. This led to a lifelong drive to be the best he could be through hard work and perserverence. Boxing and physical fitness taught David intense focus, drive, and direction. He instils that same focus and determination in his current clients to help them achieve their goals and beyond.


  • USA Boxing team member and level 1 coach

  • Ringside Master,

  • Boxing Fitness Institute

  • National Academy of Sports Medince-CPT, National Registry of Emergency Medical Technicians-EMT, CPR/AED.

Carolino Monteiro

Sports have always been a part of Carolino’s life. Whether it was playing soccer at 5 years old or playing flag football at 30, he always had a love for athletics. At the age of 10, Carolino played in the Pop Warner Super Bowl and, later in his college years, played Basketball for Norwalk Community College. Today, in his 30s, he still plays in numerous adult leagues, including flag-football, softball, and basketball. He sees health and fitness as a lifestyle and, now as a proud father, he wants to be in the best shape of his life not only for himself but also for his kids. After years of being behind a computer all day when he was in the corporate world, he decided to become a fitness professional dealing with real people and real life issues. He says it’s the best move he ever made in his career. Carolino’s main objective is to help his clients reach their goals and make fitness a lifestyle!

ACE Certified NCAA Student Athlete


  • ACE Certified Personal Trainer

  • ACE Fitness Nutrition Specialist

  • IAABO Basketball Official

  • NHFOA Football Official

  • Co-Chair ACS Naugatuck Valley Relay for Life

  • Founding Member of Valley Save our Youth

  • Studies in Business Leadership Quinnipiac University

  • Bachelors in Marketing Southern Ct State University


Naja Muller is a Connecticut shoreline native. She has over 20 years of experience in Circus Arts as a teacher, choreographer, and performer.
Naja studied at North Carolina School of the Arts with a Concentration in Ballet. She began her movement studies as a classically trained ballet dancer, training and performing with the Joffrey Ballet, New Haven Ballet, Hartford Ballet, Moscow State Ballet, and the Paul Hall Contemporary Dance Theater. She also received training in modern, ballroom, character, hip-hop, and jazz dance.
Naja's training in Circus Arts began at the renowned San Francisco Circus Center where she received specialized training under Master Lu Yi, Xia Ke Min and Xiao Hong Weng. She specialized in Chinese acrobatics, hand to hand, contortion and foot juggling while also studying cords lisse, static trapeze, lyra, and tissue.


Our Team


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83B  Main Street, Deep River, Connecticut


 Tel: 860.322.3927


Mon - Fri : 7AM - 7PM

Sat - Sun: 8AM - 1PM

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"I have been training with David for close to three years. I met David at a time when I was struggling with my self esteem and self confidence. through training with David in boxing I have regained my self esteem and confidence, and have become stronger and a more empowered individual. You will not find a more knowledgeable, caring, compassionate personal trainer."


January 26, 2018

"I can't say enough about how completely satisfied I am with these results. I'm 54 years old and have jumped on and off of the fitness roller coaster many times, several of them tethered to a personal trainer. Lino's the first personal trainer that has taken a personal interest in my training. He's kept me motivated with his varied workout routines and his attention to details "


December 10, 2017

"The training sessions I had with Carolino fit the bill perfectly. They made me aware of muscles I had forgotten (or never knew) I had. Carolino took time to really sit with me, ask me what I hoped to accomplish and then did his best to make sure I hit my fitness goal. No matter what fitness level or goal you have, I'm confident the personal training sessions will help you get where you want and at a VERY reasonable price- well worth the money and time. Thank you Carolino!"


March 10, 2016

"I have suffered with arthritis in my hip since 2013. Boxing with Dave has proven to be a life saver. As my hip worsened, I could no longer manage hot yoga, spin, walking or running, or any high intensity aerobic exercise class. I soon realized boxing was a great way to stay in shape and not aggravate my arthritis and actual enjoy my workouts. My boxing sessions with Dave very soon developed into 3 times a week 1 hour sessions each and I complemented those with 2 days of Pilates. When I finally had a date for my hip replacement surgery, I got into the best shape I have ever been under the direction, coaching and training of Dave Mulford. Dave keeps the sessions fresh by introducing Tabata and HIIT rounds along with speed and heavy bag and mitt work. He was a master at getting me back into a routine post-surgery. And as I now prepare for the replacement of my other hip, I continue to work with Dave and always will!


February 1, 2018

"When my husband and I moved to Old Saybrook two years ago, one of my first priorities was to find a new trainer who could help me develop a workout routine that would help me in my battle with Parkinson's Disease.  We met Dave at a local gym in town and I started boxing with him. Two years later, Dave has developed a great combination of boxing and weight lifting, and he continues to find ways to address my Parkinson related weakness issues.  He is generous with his time and knowledge, and I am thankful to have Dave in my corner. I feel stronger than I have in a long time.  I am healthier, and that means I can do more.  And for the first time in 5 years, my neurologist has not increased my medications.  I can’t wait to box in the new ring!"


February 15, 2018

About US




MPower Health and Fitness is New England's most unique fitness club.

We offer a variety of unique fitness programs to meet your goals:

• Traditional and Therapeutic Boxing

• Circus Arts and Flexibility

• Specialized Individual Personal Training

• Athletic Strength and Conditioning

• Surgical Pre and Post Rehab Recovery

• Traditional Cardio

• Strength Training Equipment

• Group Classes

• Nutritional Consultation

Our gym serves all fitness levels, in a friendly small town environment.

Free Pass
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