Core FSN Introduce
Introduction / Overview
For individuals and families in the Illinois area who demand more than a typical gym membership, CORE FSN in St. Charles represents a comprehensive, results-oriented training facility. CORE FSN stands for Fit, Speed, and Nutrition—a mission statement that defines its holistic approach to health and peak performance. It is much more than a fitness center; it’s an environment where hard work, discipline, and expert coaching converge to create lasting change.
The philosophy at CORE FSN is direct: no gimmicks, just a commitment to hard work and continuous effort. The gym is dedicated to empowering individuals to be great at life, helping adults build strength and resilience while assisting youth athletes in maximizing speed, strength, and endurance. Customers often describe their experience as a "blessing" and "by far the best" fitness program they have ever encountered. The coaching staff, particularly Joe and Morgan, are frequently lauded for their top-notch expertise, challenging yet effective workouts, and their "contagious positive attitude" that leaves members feeling motivated, stronger, and genuinely excited to return. This level of dedication and community support makes CORE FSN a highly valued resource in the local St. Charles, IL, fitness scene.
Location and Accessibility
CORE FSN is conveniently situated in St. Charles, Illinois, providing an easily accessible location for residents across the Fox Valley and surrounding communities. The gym’s specific address ensures it is a reliable destination for serious, regular training sessions.
Address: 731 N 17th St #10, St. Charles, IL 60174, USA
The facility is committed to being inclusive and accessible to everyone in the Illinois community, featuring necessary accommodations for ease of use:
- Wheelchair accessible entrance
- Wheelchair accessible parking lot
- Wheelchair accessible restroom
As a modern fitness center, CORE FSN provides the convenience of onsite services and accepts multiple payment options, including credit cards and debit cards, simplifying the process of committing to your fitness journey.
Services Offered
CORE FSN’s service model is built around high-impact, expert-led training in both individual and group formats, ensuring that every client, regardless of age or starting level, has a pathway to success.
- Personal Training: Highly individualized, one-on-one sessions designed to meet specific health and exercise goals. This includes specialized women’s personal training, with coaches like Joe known for crafting well-thought-out and challenging workouts.
- Adult Fitness / Group Training: Comprehensive group training sessions focused on building strength, stamina, and agility. Workouts are designed to be challenging and effective, often modified to meet everyone's needs, and ensure a high level of support and accountability.
- Speed and Agility Programs: Dedicated performance classes for youth athletes (often targeting ages 12+), focusing on linear speed, lateral movement, force production, plyometrics, and proper sprint mechanics to enhance performance and reduce injury risk.
- Team Training: Powerful, high-intensity training programs specifically created for entire sports teams. These programs are customized to the team’s sport and goals, improving speed, strength, endurance, and overall team cohesion. These sessions are often scheduled outside regular hours for uninterrupted focus.
- Performance Classes: Specialized programs for athletes, such as "Elite (Strength & Power)" and "Varsity (Speed & Lift)," that focus on maximum strength, explosive power, and advanced lifting techniques.
- On-site Nutrition Guidance: The facility includes a Shake Shop offering convenient post-workout recovery options, including protein shakes and "Tea Bombs," ensuring clients properly refuel to rebuild and reach their goals faster.
Features / Highlights
What sets CORE FSN apart as a premier gym in the Illinois region is its specialized focus and the profound impact of its coaching staff. The highlights include:
- Exceptional Coaching Expertise: Coaches like Joe are described as a "wealth of knowledge" and are deeply invested in their clients’ fitness journeys, providing personalized attention and support that helps clients feel "stronger and healthier" than ever before.
- Integrated FSN Approach: The gym combines the three essential components of performance—Fitness (Strength/Endurance), Speed (Agility/Athleticism), and Nutrition (Recovery/Fueling)—under one roof, providing a holistic pathway to success.
- Motivation and Community: The coaching staff's positive attitude is contagious, fostering a supportive community environment where members consider themselves an "entire CORE family." This strong community dynamic makes clients look forward to exercising.
- Customized Workout Planning: Even within group settings, coaches ensure that workouts can be modified to meet individual needs, preventing a generic "cookie-cutter" approach and providing personalized goal numbers for strength training.
- Focus on Injury Prevention: Programs include components like flexibility, recovery strategies, and an initial CORE Athlete Assessment to identify muscle imbalances and potential areas for injury prevention.
- Convenient Post-Workout Amenities: The on-site Shake Shop ensures immediate and convenient access to high-quality recovery fuel, which is a critical aspect of the FSN philosophy.
- In-Depth Trainer Experience: The coaching staff has a vast background in coaching both adults and youth, with a passion for developing high-performance life skills alongside physical strength.
Contact Information
For Illinois residents ready to experience the transformative training environment at CORE FSN in St. Charles, please use the following contact details:
Address: 731 N 17th St #10, St. Charles, IL 60174, USA
Phone: (630) 524-0023
Mobile Phone: +1 630-524-0023
What is Worth Choosing
CORE FSN is definitively worth choosing for any individual in the Illinois area who is dedicated to pushing past limits and achieving peak physical and mental wellness. This facility is more than just a place to lift weights; it’s a powerhouse where ambition is turned into achievement through a "no-excuses" approach driven by elite coaching.
The paramount reason to choose CORE FSN is the proven efficacy of its training methodology, which is continuously praised by members for its ability to deliver genuine, life-changing results. Whether you are an adult seeking unparalleled strength and health or a youth athlete aiming for an edge in competition, the highly experienced and invested coaches—like Joe and Morgan—will support, challenge, and motivate you every step of the way. When you join CORE FSN, you are committing to a comprehensive strategy that tackles Fit, Speed, and Nutrition. You gain a supportive family, personalized attention even in a group setting, and access to a program that is structured, challenging, and guaranteed to make you feel your best version of yourself.
Core FSN Gym
Gym
- Personal Training
- Speed and Agility
- Adult Fitness
- Team Training
- Group Training
Core FSN Details
Service options
- Onsite services
Accessibility
- Wheelchair accessible entrance
- Wheelchair accessible parking lot
- Wheelchair accessible restroom
Amenities
- Restroom
Payments
- Credit cards
- Debit cards
- Credit cards
Core FSN Photos










Core FSN Location
Core FSN
731 N 17th St #10, St. Charles, IL 60174, USA
Core FSN Reviews
working outgoalscommunityjoe wicksfacilityresultsathletehealthknowledgelife
★ 5★ 4★ 3★ 2★ 1Working out at Core FSN has been a blessing in disguise! 🩷If you’re looking for a gym that will truly help you achieve your exercise and health goals, look no further than Core FSN. Joe’s workouts are so well thought out, challenging, and effective; I have NEVER felt this strong and healthy in my life!Joe’s expertise is top-notch, and his positive attitude is contagious. Every class leaves me motivated, stronger, and excited to come back. This is more than just a workout — it’s an experience that will ABSOLUTELY get you results and make you actually look forward to exercising. And I can’t forget Morgan…he’s amazing! His dedication, knowledge, and encouragement makes every workout even better.Highly recommend joining if you want to feel your best version of yourself!-Angela Churchill
September 13 · A ChurchillI have participated in many fitness programs. Core FSN is by far the best I’ve ever experienced. The coaching is amazing! They are invested in my fitness goals by supporting me and getting me to where I want to be Can’t say enough good things about this place!
September 04 · judith SiemianowskiCore FSN is an absolutely fantastic gym! The facility and coaches are top-notch, with a wide range of equipment that's always clean, working, and well-maintained. The staff is incredibly friendly and knowledgeable, always ready to help or answer any questions you have. I especially appreciate their hours—being open early with many options throughout the day makes it easy to fit a coached workout in depending on whatever I've got going on that day. Highly recommend!
September 08 · David McAndrewThis gym has been a Godsend for me. I love coming in to work out and seeing all the great people who workout here and the angels that work in the gym and shake shop. I am honestly in the best shape of my life at 58. I’m strong!!! This place has been the best therapy for me coming out of two plus challenging years of loss and transition. I have never enjoyed working out or been able to stick to a routine until now. I’m going on 1.5 years here snd I still look forward to it and love the way I feel body, mind and spirit after. It’s a bonus to be able to grab a delicious, healthy protein-packed shake, tea and aloe shot on the way out. Love, love, love! So grateful to Joe and Ashley for thisAss kicking haven. So fun!! Thank you!🙏🏻✨💞
September 05 · Kristine ThomasThis is the best workout I've found in the area. The group classes have plenty of room to work. The facility, equipment, and setup is fantastic. The instruction is top notch and allows for all levels of fitness. I am 45 years old and find that these workouts customize and address the needs of all ages. The instructors also have been very knowledgable regarding workouts around ailments (which we all may have time to time). I can't recommend this business enough. They truly have been a health game changer.
September 04 · Ryan Corcoran
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