Principal Fitness

Aug 2020

Karl is an awesome trainer! He knows all the in and outs of fitness and is a great coach. I give Karl a score of 100% because not only does he know a lot about the fitness field but he is a great individual. Contact him now for a great session to help meet your personal fitness goals.

Feb 2016

I have trained with Karl for over three years now and had an extremely positive experience throughout my entire time training with himCrossFit Lake Zurich is very clean and well taken care of and the equipment is perfect for whatever you need to work on. Karl is a very experienced and professional trainer who has been in this profession for a very long time and knows what it takes in order to train you to get you to where you want to be physically. His workouts are challenging, but never boring or dangerous due to hit emphasis on form, technique, and all around safety. I think everyone deserves to have this great of a work out experience, it's unfortunate that more gyms...read full review

Jun 2015

I have been training with Karl for about 4 to 5 days a week for almost one month now and I am very happy with this Crossfit gym so far. I would definitely recommend this gym and Karl to anyone who wants to train with a fitness expert at a very reasonable price. My husband and I love the smaller classes and individual attention. We did our research before finally deciding on training with Karl. We really didn't want to be 1 of 20 to 30 people who probably only gets the trainer's attention once or twice per WOD. Karl is very fit but also very smart, definitely not a meat head. His scientific approach to fitness and health really sets him apart from other trainers. There...read full review