stronger starts here
athletes to everyday movers, we help you train smarter and live stronger.
athletes to everyday movers, we help you train smarter and live stronger.
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Experience personalized coaching that aligns with your goals, whether you're recovering from an injury or aiming to surpass your athletic peak.
Work out in our exclusive, private facility featuring cutting-edge equipment, with the freedom to train solo or bring along a family member or friend!
We focus on building a strong foundation of athletic performance, confidence, and mental strength — in sport and in life for girls from middle school to college.
Find what makes you stronger.
Karen Koutsavlis is the coach behind New England 360 Fitness - a wife, mom, two-time Boston Marathon finisher, and someone who genuinely gets it. With over 20 years of experience and certifications including National Board Certified Health & Wellness Coach, ACSM Certified Personal Trainer, and Precision Nutrition Level 2 Master Coach, she brings both expertise and real-life understanding to every session.
"I don't coach from perfection - I coach from experience. Having navigated my own struggles with food and body image, I'm now a face and body of recovery and strength - and I'm dedicated to ensuring no young woman goes through what I did. I believe body language matters more than body image, and I want women of all ages to feel powerful in their bodies, not just look a certain way."
Whether you're a serious athlete, navigating puberty, recovering from injury, managing chronic pain, or rediscovering your strength after years away from fitness, Karen will meet you exactly where you are. Her approach blends strength training with behavioral coaching because she knows that sustainable change happens when we honor where you are right now. Whether working with young women navigating puberty, adults managing chronic pain, or anyone rediscovering their strength, she creates individualized programs that meet your goals with strategies that actually work for your life.
At New England 360 Fitness in Hooksett, NH, you'll find more than expert programming - you'll find someone who listens deeply, celebrates your wins, and helps you build a life that feels strong, balanced, and unapologetically you.

Does my kid need to be an "athlete" on a team to come?
No, our youth programs are designed for all levels, including those new to sports and athletic activities.
Can you help with the behaviors between workouts?
Absolutely, our comprehensive approach includes guidance on lifestyle and behavioral changes for optimum results.
I don't know what to do after physical therapy and am afraid to workout on my own again?
Our coaches are experts in post-rehab training, helping you transition safely and confidently.
Do you offer sessions for two people at the same time?
We offer duo sessions, allowing you to train with a partner while still receiving personalized attention and a fraction of the cost of one-on-one sessions.
How can I book the training sessions?
Due to the personal nature of our coaching, personal training sessions are booked directly with your coach. Our seasonal classes can be booked once you purchase a package that unlocks the schedule for clients.
Do you also train adults?
Yes, we specialize in training for busy professionals, former athletes, and post-rehab clients.
My back/knee/shoulder hurts so I can't workout - I'm not sure how to start?
We specialize in injury recovery, designing programs that safely integrate fitness back into your life.
Can you help with nutrition if I workout at another gym?
Absolutely, we are happy to provide nutritional support whether you workout at New England 360 Fitness, somewhere else, or even if you haven't started a movement routine yet.
Are seasonal classes available for trying?
Yes, we invite you to try our seasonal classes for free to experience our unique training approach. Book a call to learn more.
What makes New England 360 Fitness unique?
New England 360 Fitness offers something truly unique: expert, personalized coaching in an exclusive private facility with brand-new equipment. This isn't a crowded gym with generic programming - it's a premiere training destination where you receive top-tier coaching, individualized attention, and the tools to achieve goals you never thought possible.