Book your free assessment
Personal training and small group strength training focused on moving better and getting stronger in Northfield, Illinois.
Book your free assessment18,000+
Sessions delivered
MAX 4
Clients per session
90 Days
Every client retested
★★★★★
Verified Google reviews
What is Strength Affect?
Moving well and getting stronger is what keeps you out of pain, performing at your best, and capable for years to come. Through movement screening, hands-on coaching and testing you can see, our Northfield coaches build training that holds up outside the gym.
Book your free assessment
Get back the range you've lost and train around an old injury. Every program starts with a movement screen.
Progressive strength and power, coached every session, so you get better at the thing you're training for.
The muscle, bone density and balance that decide how the next thirty years go.
.avif)
Certified through
04
+
Where quality movement and strength come together, including barbell and velocity-based training when it fits.
Equipped & measured with
Our standard
A movement screen, InBody and force plates before you train a single day — then retested every 90 days. Across every client retested since 2023:
94%
Improved their movement score
96%
Improved Strength
84%
Improved their body composition
.avif)
Measured every
90 Days
.avif)
Small Group Training
Structured strength training with a coach, four clients max.
Learn more
.avif)
Personal Training
One coach, one hour, pointed at a single goal.
Learn more
Both start the same way
The first 21 days — six one-on-one sessions to learn the movements and set your loads.
★★★★★
“I’ve had multiple injuries and surgeries over the years. I’m now doing squats and deadlifts pain-free for the first time in over 10 years.”
Dennis C. — Verified Google Review
★★★★★
“I started training with Sterling after herniating a couple discs in my back. 3 years later, I’ve had no issues with my back — I’m stronger now than I was 25 years ago.”
David K. — Verified Google Review
★★★★★
“I’ve been working with Sterling and Micah for several months and could not give them a higher recommendation. It is not a one size fits all approach — the workouts are tailored to each client.”
Matt T. — Verified Google Review
Your first visit gives us a chance to learn about you, and gives you a chance to experience Strength Affect.
We'll discuss your goals and training history, assess how you move, establish your starting point, and explain what we recommend next.
.avif)
Where we are
Strength Affect is located at 314 Happ Road in Northfield, Illinois, providing small group strength training and personal training for clients throughout the North Shore.
Our clients range from people beginning strength training for the first time to experienced lifters who want better coaching and a more structured approach. You don't need to already be strong or fit to start — that's what the process is for.
Northfield
Winnetka
Wilmette
Glencoe
Glenview
Kenilworth
Highland Park
Northbrook
Strength that affects how you live.