Core FSN provides adult group training and youth speed, agility and strength training to the Saint Charles, IL, area. Keeping Physical and Mental Wellness a Priority in Your Daily Life
At Core FSN, adults work one-on-one with a trainer and coach or in a group setting. Teen, middle-school and youth athletes have a dedicated space and a team of coaches to help foster their progress. Our classes focus on optimizing strength and improving overall fitness. We also have a dedicated “workout of the day,” and a range of daily classes and sessions. We created CoreFSN to “fit “in with your daily lifestyle, goals, and availability. A healthy way of eating supports a healthy way of living. Core Nutrition is a place to refuel and rebuild post-workout and your destination when you’re looking for a “meal on the go” that won’t be detrimental to your healthy lifestyle.
I am absolutely loving my experience at Core FSN! I had never tried small-group personal training before, but it turns out it’s exactly what I needed.
Coach Mo and Coach Joe are incredible—knowledgeable, supportive, and always willing to help. They truly take the pressure off and make starting out in the gym feel approachable and comfortable.
The community is unmatched. The members genuinely feel like a family, which makes every workout fun & something I look forward to.
And as a bonus, being able to grab a protein shake on the way out is such a nice touch. Highly recommend!
EJ
Emily Johnston
Nov 23, 2025
1.0
Me and my boyfriend worked out at Core for almost a year and if you have goals to meet this is the place to be. Joe is great and the extra love and attention he puts in can’t be beat. He knows his stuff! My only complaint was the extra attention from one of the trainers. It was only when my boyfriend wasn’t with me. I was offered sessions outside the gym maybe 3 or 4 times. The discount price was tempting but I had to keep declining. I prefer the safety of the gym . Once you say no that should be respected. I began getting several calls and unwanted text messages. It made me uncomfortable and was creepy. I’m sorry I have to agree with the other people the smell was distracting a lot. The workouts were still top notch . But no means no dude! I would still recommend people give it a try but maybe with a different trainer.
TM
Triple M
Nov 12, 2025
1.0
One of the coaches (Moe) reeks of marijuana. On several occasions the smell made my kid sick. You guys gotta start drug testing your people . What kind of people do you have working for you Joe? Not a good environment for kids at all. Don’t waste your money here. Take your business elsewhere.
- My wife and I have both tried to resolve this and was told you’d be in touch . You can’t only respond once a review hits. For us this issue is resolved we have found a new gym which we are pleased with. In speaking with our parent group we are not the only ones that experienced this. Hey I like the guy and he is knowledgeable. We saw great results but we can’t have our kids exposed to this nonsense.
TW
Tim Welch
Oct 21, 2025
5.0
I can't say enough good things about Joe & Moe. Their program for athletes has been tremendous for my high school aged son. They have developed a top tier program and genuinely care for the development and successes of their athletes. If you are looking for someone to help your athlete achieve their goals I suggest giving Joe a call.
BG
Bridget Galvan
Sep 16, 2025
5.0
Joe and Mo are the best coaches. They want nothing but the best for you and encourage you to push the limits. I am 10000% stronger than before and couldn’t be happier with Core. And a great community of members is the cherry on top!
What type of training programs does Core FSN offer?
Core FSN offers adult group training, youth speed, agility, and strength training, as well as one-on-one personal training and group classes focused on optimizing strength and overall fitness.
What are the operating hours of Core FSN?
Core FSN is open Monday through Friday from 5:00 AM to 8:30 PM, and Saturday from 6:00 AM to 2:00 PM. It is closed on Sundays.
Where is Core FSN located?
Core FSN is located at 731 N 17th St., Unit 10, Saint Charles, Illinois, 60174, USA.
What payment methods are accepted at Core FSN?
Core FSN accepts American Express, Cash, Check, Discover, MasterCard, and Visa as payment options.
How can I make a reservation or schedule a class at Core FSN?
You can make a reservation or schedule a class through their online booking system at WellnessLiving via https://www.wellnessliving.com/rs/schedule/corefsn.
What is Core Nutrition and how is it related to Core FSN?
Core Nutrition is a nearby cafe and smoothie bar that provides healthy meals and refreshments, ideal for refueling post-workout after training sessions at Core FSN.
Are there other fitness facilities near Core FSN?
Yes, nearby fitness establishments include Full Strength Pilates, The Speedschool.net gym, Synergy Kettlebell Training, Higher Level Fitness, and Egyptian Fitness Center.
Can customers visit Mike’s Golf Center while at Core FSN?
Absolutely. Mike's Golf Center, a golf instruction and community service venue nearby, offers a great recreational option before or after your workout at Core FSN.
What associations is Core FSN affiliated with?
Core FSN is affiliated with the National Strength and Conditioning Association and the National Athletic Trainers Association.
What languages are spoken at Core FSN?
Core FSN operates primarily in English to assist their clients.