Results Aren’t Guaranteed, They are Earned

HARD WORK. The two most important words when it comes to getting results. At USI we believe in the Kaizen principle… constant and never-ending improvement.
We select the exercises that give you “the biggest bang for your buck” and utilize the right training methods that are aligned with your goals.  Chris Grayson, Chicago personal trainer, is backed by 15 years of real world results and ready to help you.

Our Proven Method


You’re only as strong as your weakest link. With our Structural Balance Assessment we identify these weak links to prioritize your training and make you bullet proof. We also implement a 12-site body fat analysis to determine WHERE you store the most body fat, WHY you store it there, and HOW to lower it.

Program Design

After your initial assessment, we begin building your tailored program. Based on your assessment as well as your personal goals, we design the appropriate training modalities that are aligned with your goals. This is essentially how we craft your plan to get you in the best shape of your life.

Nutritional Guidance

At USI we strongly support your nutritional needs by providing detailed guidance regarding what you need to change to get the results you came here for. We are available around the clock to answer any questions and give advice.

Real Training That Produces Real Results

We specialize in cutting edge training backed by science, along with years of academia and work experience. At USI we are focused on what works, not fads or what’s trendy.

Here’s what we know: If you make the commitment and put in the effort, you will get results.

But don’t just take our word for it. Every trainer will tell you they get results. Listen to what are clients have to say.

Hear what our clients say

Meet The Coaches

Chris Grayson
“HARD WORK. The two most important words when it comes to getting results.” – Chris
Chris Grayson has rightfully become one of the most sought after trainers for cutting edge info on training and nutrition in the Chicago area.

Chris has been training people for a living since leaving the Marine Corps in 1998, and has studied and applied his knowledge to produce results with a variety of clientele.

Marty Ruelas
“Strength comes from within.”
Marty has been a Certified Personal Trainer for over 9 years now. Having been an athlete all his life and then serving in the United States Marine Corps, health and fitness has truly become Marty’s passion.

Nothing is more enjoyable for Marty than to guide a client down their path to a healthier new body and lifestyle. Whether you want to lose weight, gain muscle, or become a more explosive athlete, Marty is the man for you.

Contact Us

Have a question about training, nutrition, supplementation, or anything relevant to Urban Strength Institute? Shoot, and we’ll get right back to you. • 312-725-4874