Proudly located in Northfield and serving clients across Winnetka, Glencoe, Wilmette, and the entire North Shore.
Knocking on the doors of CSI came at a time when I felt like my health was declining. I was tired all the time, my energy was low, something felt off in my body, and I knew I needed to make a change...
Knocking on the doors of CSI came at a time when I felt like my health was declining. I was tired all the time, my energy was low, something felt off in my body, and I knew I needed to make a change. Looking back, it's clear that this was one of the best decisions I've made for my health and overall well-being. From the very start, I felt welcomed and supported, and that's largely thanks to my coach, Logan. Logan is incredibly knowledgeable and professional, but what truly sets him apart is how attentive, kind, and encouraging he is. He really listens, understands your goals, and adapts your training to meet your needs. You can tell he genuinely cares—not just about your progress in the gym, but about how you're doing as a whole person. The facility itself is always clean, well organized, and filled with positive energy. All of the staff at CSI are professional and welcoming, and they help create an environment where everyone feels comfortable and motivated to grow.
Over the past 15 months, I've experienced significant changes. I've lost weight, and my blood pressure dropped from the hypertension range—where I was close to needing medication—to completely normal. I used to feel tired all the time, but now I have the energy and focus to enjoy other parts of my life more fully. Working out at CSI has been an incredibly worthwhile investment, and I'm so thankful to be on this journey with Logan. If you're thinking about starting or restarting your fitness journey for your health, I highly recommend CSI and Logan!
After herniating 3 discs in my back and months of rehab, I started training with John at CSI. My main goal was to avoid back surgery. 6 months later I'm pain free and also lost weight and gained strength...
After herniating 3 discs in my back and months of rehab, I started training with John at CSI. My main goal was to avoid back surgery. 6 months later I'm pain free and also lost weight and gained strength and flexibility.
Our family has been been going to CSI since it's inception. These folks know what they are doing! They tailor your workouts helping you reach your goals. Thanks for keeping me out of the operating room!
Highly recommended 5 stars all around.
Chicago Sports Institute has been an absolute game changer for our family. They train my son Miles, who finished 3rd in the state of Illinois in the...
Chicago Sports Institute has been an absolute game changer for our family. They train my son Miles, who finished 3rd in the state of Illinois in the 400m as a junior — and CSI was a major reason why. They didn’t just train him to run faster; they educated him on nutrition, how the whole body works together, recovery, stretching, and strength. They built his confidence and helped him mature as both an athlete and a young man.
The culture here is truly client-first. Authentic, caring, and extremely professional. They focus on the full development of the athlete, not just performance in a single season. If you’re looking for a place that will invest in your whole athlete — mind, body, and preparation — Chicago Sports Institute is worth every bit of the investment.
I am having such a great experience with CSI. I play Hockey and it completely changed my game on the ice. I got faster, stronger, endurance went up etc...
I am having such a great experience with CSI. I play Hockey and it completely changed my game on the ice. I got faster, stronger, endurance went up etc.
Throughout the time I've been with CSI which is a year I've been able to lose body fat and Gain a lot of muscle mass. I gained 5.5 Ibs of muscle and percentage body fat went down 7.7%. I went from only doing 3 chin ups to 13 chin ups. They have a great staff as well! My time here has been super successful. Nothing but respect for my trainer at CSI.
Feeling exhausted and overwhelmed by hormonal changes, I knew I needed a change. My doctor suggested exercise, but I didn't know where to start — until I came to CSI and was paired with Logan...
Feeling exhausted and overwhelmed by hormonal changes, I knew I needed a change. My doctor suggested exercise, but I didn't know where to start — until I came to CSI and was paired with Logan.
Logan's kindness, patience, and support made all the difference. He guided me through every step, helping me build strength, improve my sleep, and reconnect with the version of myself I'd been missing.
Working with Logan has truly been one of the best investments I've made in my health.
The most professional practice you will work with anywhere. Starts with a highly selective hiring process for each and every team member they bring on board through to your in-depth initial evaluation...
The most professional practice you will work with anywhere. Starts with a highly selective hiring process for each and every team member they bring on board through to your in-depth initial evaluation session through to your customized and constantly re-calibrated training program. CSI develops a holistic plan for you that isn't meant to be an overnight fix - it's a comprehensive solution. Their level of commitment and professionalism never ceases - they live and breath it each and every day and it's consistent from trainer to trainer.
My son and I began our sessions together this past Spring, each with very different objectives. Not only do they always work to accommodate our hectic schedules, it's really amazing to see first hand how they approach each client's individual needs and circumstances and aren't ever trying to promote a one size fits all approach. At CSI they're all about the long-term and developing the right solution for you. If you're serious about your training and commitment, this team will give you everything you need to get there.
I just celebrated my 1 year with CSI so it's time to review them on here. I have been working with Mike Sorrentino since I began with CSI. Mike, and the entire staff, is not just your average meat-head...
I just celebrated my 1 year with CSI so it's time to review them on here. I have been working with Mike Sorrentino since I began with CSI. Mike, and the entire staff, is not just your average meat-head trainers. Being a former Big-Ten athlete, I have been around top-notch trainers and CSI is on that level. They really know how to create workout and nutritional plans directed at achieving the results you desire. I highly recommend CSI to anyone looking for a top-notch facility and staff.
CSI has been amazing for my overall health and fitness! I am a runner / Pilates lover but felt stuck in my progress after my 3rd pregnancy. I've never felt better since I started at CSI! The workout programs...
CSI has been amazing for my overall health and fitness! I am a runner / Pilates lover but felt stuck in my progress after my 3rd pregnancy. I've never felt better since I started at CSI! The workout programs are tailored to you and your goals and very results driven. The trainers are all so nice and friendly. Colin is knowledgeable, friendly and has been great to work with. I tell anyone who listens how great CSI is!
I started training with John at CSI at what I can confidently identify as a low point in my fitness trajectory. In the course of shedding nearly half of my body weight, I found my progress stalled for...
I started training with John at CSI at what I can confidently identify as a low point in my fitness trajectory. In the course of shedding nearly half of my body weight, I found my progress stalled for three months and I knew that I needed help. Within a month of training four times a week with John and following his nutrition plan, I dropped ten pounds of fat.
Over the past year and a half training with John, I have exceeded my own expectations - drastically increasing my strength, health and energy. I believe this was possible not only because of John's skill and dedication as a strength coach but also because of his belief in me and his ability to bring out the best in me.
I am healthier, stronger and happier than I have been in the recent past because of John and my time at CSI. I love going to the gym and truly enjoy all of the trainers and clients at the facility - I'm grateful to be a part of the beautiful CSI community.
I was reluctant to start working out again after not weight training on my own consistently. They helped me get back into at my own speed, with a program geared towards my numerous weak areas, they inquired...
I was reluctant to start working out again after not weight training on my own consistently. They helped me get back into at my own speed, with a program geared towards my numerous weak areas, they inquired and help me with nutrition, they discussed restaurants and created menus without me asking, they support me and help me push through various plateaus. It is much more than a place to work out with a personal trainer. There is both a personal touch with the trainers and a great support community among others working out at the same time. I am on month five and intend to be there a long time. I would highly recommend this place. It is much more than a gym.
I have worked with John, at CSI, for the past twelve weeks and I could not be happier with my experience. I came to him because I wanted to see if I could avoid having surgery on my shoulder (I have a slight...
I have worked with John, at CSI, for the past twelve weeks and I could not be happier with my experience. I came to him because I wanted to see if I could avoid having surgery on my shoulder (I have a slight rotator cuff tear and a torn labrum). He has helped me gain strength and stability in the shoulder, in addition to an overall improvement in my body. During my 12 weeks at CSI, I have lost 22 lbs of bad weight (fat) and have gained 6 lbs of muscle. Without hesitation, I would recommend him, and CSI.
I have now been working out at CSI for about a year. Hard to say enough good things about the quality of training. The plan is thoughtfully constructed and adapted to your goals. I'm always challenged...
I have now been working out at CSI for about a year. Hard to say enough good things about the quality of training. The plan is thoughtfully constructed and adapted to your goals. I'm always challenged, but also always improving, leaving me looking forward to the next session rather than dreading it.
The proof is in the pudding. Working with Phil, I've steadily added muscle and improved body composition. I recently set a PR marathon time, despite being heavier (muscle mass) and older, in a more challenging race. As strength has grown, so has confidence, with knock-on benefits in other areas of life. A hard morning session at CSI puts the minor issue at work in the afternoon into perspective.
I don't have many regrets in life, but for sure one is that I didn't start strength training earlier . I'm glad to have finally started at a place as professional as CSI, with a good community of people.
Before starting at CSI, I had a trial session elsewhere and left very unimpressed. After that, I decided to trust my friends (who swore by CSI) that it was worth the premium. I'm glad I did. If you think personal training is expensive, think for a moment about the price of not having a strong, healthy body as you age....
Thank you Phil and the rest of the CSI team.
I have been personal training with Cade at Chicago Sports Institute for the past 2 years to target hormonal weight change, strength training and overall health. CSI takes the guesswork out of how to reduce...
I have been personal training with Cade at Chicago Sports Institute for the past 2 years to target hormonal weight change, strength training and overall health. CSI takes the guesswork out of how to reduce body fat and build muscle. After years of trying different group classes, my body fat percentage decreased quickly with CSI due to their comprehensive approach including an individualized training plan, nutrition coaching and high tech recovery facility. Cade and the whole team at CSI is supportive, motivating and experienced with helping their client's reach their health and athletic goals. As a working mom in my 40's, getting lean and toned to tackle my next decade is now a reality and not just an unchecked goal.
I've worked with Dave and his team for 4 years. Their knowledge, passion, and attention to detail sets them apart. I've worked with other trainers and other facilities over the years and none can compare...
I've worked with Dave and his team for 4 years. Their knowledge, passion, and attention to detail sets them apart. I've worked with other trainers and other facilities over the years and none can compare to CSI. Awesome people, facility and results.
I love CSI. Their trainers are professionals and the facility is state of the art. I have been a customer for over 10 years. No question they are the best in the north shore.
12th year there and verified results. I improve every week. By rotating my workout Phil keeps my whole body in shape and balanced. Very personalized and precise training. Very professional. Knowledgable...
12th year there and verified results. I improve every week. By rotating my workout Phil keeps my whole body in shape and balanced. Very personalized and precise training. Very professional. Knowledgable and well trained staff. Clean. Best owner ever!!
I've been training with Phil for over 6 years and won't ever leave!. You get more than just physical training - it's about nutrition, life style and overall wellness. I personally like one on one training...
I've been training with Phil for over 6 years and won't ever leave!. You get more than just physical training - its about nutrition, life style and overall wellness. I personally like one on one training which for me is the key driver for continued success. I would highly recommend CSI.

THE NORTH SHORE'S #1 PERSONAL TRAINING GYM