STARTS 9/18/2023


4 Club Centre Ct, Suite C, Edwardsville, IL 62025



Our program is designed for all abilities and we love beginners! You do not need to come with any experience in the gym, just be ready to work hard!

Fully commit to the entire length of the program. There will be difficult workouts and challenges. We want participants who will see it through to the end!

Be disciplined enough to apply our nutrition plan. The program does not work without your consistency and efforts. You WILL see results as long as you follow the plan.

Understand that all transformations are welcome. This challenge won't be solely about losing weight, and every may come with a different goal in mind. That's what makes the class unique!

Be willing to take before and after pictures so you're able to track your progress. Results don't only come from a scale, being able to SEE them will help keep you motivated. 

Have respect for your fellow class members, coaches, and the rules of the gym and come to each class with a positive attitude. 



Meet your coach

Ioannis Katrantzis

Owner and Founder 


  • Certified Personal Trainer through ACE for the past 7+ years
  • Bachelor of Science in Kinesiology 
  • Master of Science in Exercise Science, Sports Psychology  
  • Masters in Business Administration
  • Certified Functional Strength Coach L1
  • Certified Functional Movement Screen Specialist L1 & L2
  • Certified Functional Aging Specialist
  • United States of America Weightlifting L1
  • Precision Nutrition Level 1

What does the I-Koach Fitness Culture mean to you? 

It means making a difference in the lives of others and helping people live their healthiest and best life!


The Best Self Challenge was created to make Functional Training accessible to a larger population. We have personally experienced the life-changing power of functional fitness and wanted to find a way for others to connect as well. We know it can be scary or intimidating to come into the gym on your own, which is why the group process is so powerful! Everyone will benefit from the workouts if they just commit and engage, and now they can do that in a safe and friendly setting.

What we want is to find individuals who are ready to jump in, work hard, and embrace the program with an open mind and attitude. Functional Training CAN transform your life, and we are looking for individuals who will represent the program by putting their best foot forward. If this sounds exciting and something you want to try, fill out an application ASAP. Our spots fill up quickly! We can’t wait to meet you.