Low Carbohydrate VS High Carbohydrate Diets

Low-carb or keto diets seem to be all the rage nowadays, but the question is, is it better for fat loss in comparison to a moderate carbohydrate diet or low-fat diet? Many people who go on a keto-diet and restrict carbs, as well as calories end up losing a significant amount of weight and quickly at first but then it starts to slow down. This occurs by depleting water and glycogen stores in our body. […]

How to Improve Gut Health

Having issues with your digestive system or notice that you are getting sick more often, maybe it is a good time to take a closer look at your gut health. Our gut plays a pretty big role in helping us to digest food, absorb nutrients, metabolize drugs and help aid in regulating our immune response. Our guts are also highly sensitive to not only the things we ingest but whether we are exercising or even […]

How I Tell Clients To Eat

I was talking to a client the other day about seriously trying to drop some body fat. In the personal training world, many clients will primarily be training for fat loss. Sure you will have many that want to improve health, get stronger and the like, however, the majority of adult age clients will want to lose some fat. While there are many ways to lose body fat the number one factor will be consistency. I […]

Digestion Tells the Whole Story

What Goes on in the Gut Digestion has been a hot topic of discussion in the last couple of years. With the profound research coming out about how important our gut bacteria can be has opened our eyes to a whole new way of thinking about our health. Everything from our immune systems, brain, and even fat loss can be dramatically affected by what is going on in our guts. I have had my own […]

Build a Strong and Resilient Lower Back With These 3 Exercises

There are a few things in fitness and in life that seem to pop up all too often. One of the first things that come to mind is lower-back health. In everyday life, it can stop us in our tracks. From long days to sitting at a desk to hours upon hours of manual labor, the lumbar spine can start to feel not as resilient and at times, painful. In the gym and during various […]

Why You Plateau and 5 Ways to Break Through It

Plateauing or plateau – a state of little or no change following a period of activity or progress. During my time as a trainer, I have heard the word “plateau” used all too often. Oftentimes it is simply because someone does not feel that there are getting anywhere with their health and fitness goals. They are pounding the pavement with their workouts and staying away from junk food. So, the natural thing to think when […]

6 Tips To Build More Muscle

Factors for Muscle Growth There is a great debate on what works best in the strength-training world for muscle growth.  The simple answer is it depends on your goal and your experience level. There are many ways to construct a strength-training program and many variables that will determine your success.  Sometimes you can use a periodization model to include multiple workouts splits in a given year. You can also follow an undulating periodization model where […]

Controlling Food Portions and Macronutrient Breakdown

Controlling Food Portions and Macronutrient Breakdown If many of us just stopped eating the amount of food volume that we consume, we would probably lose fat and feel better. Unfortunately, it is not that simple. I do not believe a calorie is a calorie. I also feel that reducing calories can make us become nutrient deficient, lack energy, lose muscle, and set ourselves up to overeat and fail in the end because calories are cut […]

About Me


Justin Grinnell is the Owner of State of Fitness, an 11,000 square foot space in East Lansing, Michigan. Opening its doors in 2010, State of Fitness is already one of the leading training facilities in the Midwest. State of Fitness has over 350 members who train every day under his leadership. He also operates a Corporate Wellness facility at Jackson National Life in Okemos, Michigan servicing over 2,300 employees. In addition to being a facility owner, Justin has been a featured writer for over seven years in the magazines Healthy & Fit and Muscle & Fitness. Justin has also written for various online publications such as Breaking Muscle and The Personal Training Development Center.  

Justin has acquired over 35,000 hours of training and coaching experience in the last 15 years. He has competed in several bodybuilding shows, powerlifting, Olympic lifting, 1⁄2 marathons, and CrossFit competitions. In 2004, Justin graduated with honors from Michigan State University where he obtained a degree in Kinesiology and Exercise Science. He currently serves on Board of The College of Education at MSU. Justin has mentored over 300 students in his internship program from the Kinesiology program at Michigan State University.  

Justin is a Certified Strength and Conditioning Specialist (CSCS) through the National Strength and Conditioning Association, a Certified Personal Trainer through the National Academy of Sports Medicine (NASM) and the International Sports Sciences Association (ISSA). Justin holds a level I certification through CrossFit and Precision Nutrition. Justin is certified in the Functional Movement ScreenTM Level II.  

Justin is the author of several E-books, including “The Grinnell Lifestyle: My Nutritional Doctrine” and “How to Build a Rockstar Personal Training Internship” and “The GTS Training Model” at State of Fitness. He is a speaker for the National Fitness Business Alliance with Thomas Plummer and is on the Personal Training Advisory Board Member for Retro Fitness and KokoFit Clubs.  

Justin lives in East Lansing, Michigan, with his wife, Kathleen, and two sons, Brennan and Beckett.