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Strength Starts Here.
Skill of Strength
We're excited to help you on your fitness journey!
At Skill of Strength, we deliver results-driven training designed to help you feel your best and live a healthier, more fulfilling life.
Whether you are looking to get started with strength training or you’re a seasoned athlete looking to take your athletic performance to the next level, we’re here to help.
Every member begins with a free class or a comprehensive evaluation, allowing us to tailor your program to your body, goals, and lifestyle.
We start by restoring quality movement, then gradually build strength, volume, and intensity — helping you move better, feel better and perform better, both in and out of the gym.
Skill of Strength (SOS) was founded by husband-and-wife team Mike and Amanda Perry with one mission: to help you unlock your full potential. With decades of combined experience training athletes and everyday people, we take a science-based, results-driven approach to helping you become stronger, healthier, and more resilient.
Our highly educated and qualified coaches are here to help you get stronger, and see real results that last.
What can you expect from Sos?
Smart training. Supportive coaches. Lifelong strength.
We meet you where you are — and help you get where you want to go.
At Skill of Strength, we’re here to help you achieve your full potential — in and out of the gym.
Here’s how:
- MOVE Better
Restore your body’s natural ability to move with our science-backed training programs. Every session includes smart warm-ups, strength training, core exercises, and metabolic conditioning. - FEEL Better
Rediscover what it means to feel like yourself again — with more energy, better focus, and a renewed sense of motivation. - PERFORM Better
Build explosive strength, lightning speed, and the kind of durability that sets you apart — on the field, on the court, and beyond - LOOK Better
Build lean muscle, burn fat, improve posture, and create a strong, athletic look — while boosting your confidence inside and out.
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Our community is what sets us apart - and it's what keeps you coming back.
At SOS, you’ll find more than just workouts — you’ll find a supportive community that makes training the best part of your day.
For over 15 years, we’ve helped beginners, weekend warriors, student-athletes, and pros get stronger, move better, and feel more confident in and out of the gym.
If you’re ready to train smarter and see real results, you’re in the right place. Join a community that’s committed to strength, health, and lasting progress — and let’s get to work.
Train with SOS
- One-on-One Personal Training with intelligent coaches guiding you through a personalized training program built for your goals, your body, and your life.
- MOVE Adult Functional Training Classes led by experienced coaches who guide you through functional strength training workouts that deliver results. You’ll work out in a small group with others who are on a similar journey, inside a motivating and supportive community that encourages consistency.
- Customized Training Plans: aligned with your goals. Whether you’re an experienced lifter with specific goals or an athlete looking to outwork and outperform the competition, we’ve got your back. Our professional training programs are designed to help you build the strength, speed and confidence you need to take your performance to the next level. Programs can be executed at our facility or adapted for outside use - helping you stay healthy, minimize injury risk, and make consistent progress all year long.
- Youth Sports Performance: where passionate coaches help young athletes build a strong foundation, master the basics, and see progress over time. Our strength and conditioning programs are specifically developed to help athletes achieve optimal performance in a safe and motivating environment.
Everything you need to crush your fitness goals
Personalized Training Options
Coaches Who Care
Easy Class and Appointment Scheduling
Results-Driven Training Programs
Premium Equipment
Full Amenities (Showers & More!)
(Select Location)
Getting stronger starts with showing up. Located in the heart of North Chelmsford, Skill of Strength is quick to find, easy to access, and ready to welcome you so you can spend more time training and less time traveling.
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Come visit us
73 Princeton St. Suite 9 North Chelmsford, MA 01863 USA
Get DirectionsChelmsford
Questions? We (probably) have the answers!
How do I sign up for a a free class?
You can sign up for a free class right here. Once we receive your request, we’ll reach out to confirm a time that works for you and let the coach know to expect you. Prefer a more personal touch? Feel free to contact us directly at info@skillofstrength.com and we’ll get you all set up!
How long does it take to see results?
It depends — everyone’s starting point, goals, and lifestyle are different. Your results will be influenced by factors like: • How consistent you are with your training • How much effort you put in during sessions • Your current fitness level and training history • Sleep, stress, nutrition, and overall lifestyle Some people notice changes in energy and strength within a few weeks. Visible changes often take longer — but the more consistent you are, the faster progress happens.
What are the ages for your group training programs?
Our MOVE group training program is for ages 18+. Our sports performance programs are designe for middle school and high school athletes. See our sports performance page for more details on ages and keep in mind everyone develops at different speeds so there is a bit of gray area and our coaches are more than happy to help you find the best program for you / your athlete.
What sets you apart from other gyms?
What sets us apart is the combination of expert coaching, proven programs, and a community that genuinely cares about your success. Every class is led by skilled coaches who guide you, correct your form, and keep you progressing. You’ll train alongside goal-oriented individuals who support you, challenge you, and hold you accountable. Our clean, well-equipped space, focused training approach, and welcoming atmosphere make Skill of Strength more than just a gym — it’s a place where you can get stronger, stay consistent, and actually enjoy the process.
How often do you recommend coming to workout classes?
We recommend starting with 2–4 classes per week. It can take time for your body to adjust to training at this intensity, so listen to your body and allow for recovery between sessions. More isn’t always better — we want you feeling fresh, ready to work hard, and get the most out of every class.
What classes are included in a membership?
Our MOVE adult group training memberships include unlimited classes. Our sports performance memberships (COMPETE & PERFORM) include two sessions per week.
Do I have to be fit to join?
No way — we love beginners! You have to start somewhere, and we work with everyone from first-timers to professional athletes. No matter your fitness level, we have a program that’s right for you. Every workout is designed to help you succeed, improve your fitness, and move toward your goals. Our coaches are experts at offering regressions and progressions so every training session is tailored to you.
Will I have access to open gym times?
Our MOVE memberships do not include open gym access, but you can add it for an additional fee. Our SUCCEED memberships include access to all open gym times. Youth performance training memberships (COMPETE & PERFORM) do not include open gym, as we want to ensure all young athletes are coached and supervised at all times.
What ages do you work with for personal training?
We've worked with clients ages 10 - 85!
How many people are in a class?
We cap our adult group training classes at 12 members (and 20 members on Saturdays). On average, classes have between 5–10 members. Our youth performance training programs are capped at 10–12 participants for one coach, and 16 participants when there are two coaches.
Still curious? Talk to us!
You don't have to be great to start, but you do have to start to be great.
