Professional Testimonials

I’m extremely impressed by the Underground Gym’s training methodology. Greg Mihovich is an expert in conditioning and hand to hand combat and delivers the material in easy to digest and implement practical blocks of solid training. After leaving US Navy I’m determined to qualify for the US Special Forces and Greg’s training is the best thing to get me there. Thank you Greg!

Here’s the deal… In the world of fitness the majority of gyms and trainers are not worth the paper their little certificates are printed on. I should know, I’ve been training trainers for over a decade. But then there are guys like Greg at Underground Gym who embody the title of “Coach”. Greg and his staff are fantastic! They are among the best in North America and at Morrison Industries we give Underground Gym our very highest recommendation! If you’re within striking distance, the only place to train is UNDERGROUND GYM!

I highly recommend Greg Mihovich and the Underground Gym hand to hand combat and conditioning training methods to any police officer that cares about maximum performance in the field. Greg is a true professional and delivers exceptional quality of training.

I have been training with Greg on and off for over 12 years and the drills, skill, and techniques I have learned from him have not only tremendously helped to elevate my fitness level, but my combat readiness as well. Greg constantly seeks more knowledge and every time we train he shows me something new. In my personal opinion, if Greg is teaching it, it’s good to go!

I’m extremely impressed by the Underground Gym’s training methodology. Greg Mihovich is an expert in conditioning and hand to hand combat and delivers the material in easy to digest and implement practical blocks of solid training. After leaving US Navy I’m determined to qualify for the US Special Forces and Greg’s training is the best thing to get me there. Thank you Greg!

As a Law Enforcement Officer in New Jersey, I was looking for a gym and coach that would help me in my ability to respond physically and defensively to any situation I was faced with. I knew that Greg Mihovich, owner of the Underground Gym was the person I wanted to train with after the first time I met him. On the defensive side, over the years with Greg I have trained Boxing, Brazilian Jiu Jitsu, Muay Thai, as well as expanding on my skills of weapon retention, gun and knife defense, and all the skills I needed that would allow me to go home safe at the end of my shift each day. Without a doubt Greg is one of the most well rounded fighters both with stand up and ground fighting I have ever met. On the physical side I trained with Kettlebells, Olympic Lifting and Bodyweight exercises that allowed me to reach a level of fitness I could not have achieved anywhere else. Each day Greg worked with me to reach new personal records on various exercises. As I progressed I learned new exercises from Greg that allowed me to continue advancing my level of fitness, and allowed me to always be challenged and motivated. I have been a member of many gyms, I have trained in many different fighting gyms, but I’ve yet to meet anyone with Greg’s knowledge of fitness, nutrition, and the ability to change people’s lives. To this day he remains one of my closest friends and I highly recommend Greg and his gym to anyone who wants to increase their level of fitness and quality of life.

Earlier this year I signed up for the Marine Corps and had 6 month to get into great shape. My friends recommended the Underground Gym and I joined. What a blessing that was! Training under Greg’s expert coaching I was studying mobility, kettlebell and bodyweight exercises along with Muay Thai Kickboxing, Grappling, Knife Fighting and Combat Systema. Every training session presented a clear objective and I felt like I was improving every week. Long story short, after six month of solid training at the Underground Gym I went to the Marine boot camp and physical training there was easy for me! I was in the best physical condition out of the entire class and qualified for the Recon Teams. Now I’m a very determined and focused individual, but I know for sure that without Greg’s professional guidance and the entire Underground Gym training team I would never achieve such great condition. Thank you Greg and Underground Gym! Every time I’m back to Jersey you will see me training again!

I trained with Greg for 3 month prior to me leaving college to go to play soccer at Division 2 School. I thought I was in shape before I started, but his training really focused on muscle groups I never knew i had, especially in my core. He really showed me how to strengthen my core and legs through various Kettlebell exercises. I am using weights in squats and snatches I never thought I’d be able to. His program made me a much stronger athlete, better conditioned, and a lot more agile. I went into this experience not being able to do one real push up and also not being able to bounce back up from a fall to doing 15 plus good pushups and to rolling and really controlling my body to stand back up quickly and ready to go again. I will most definitely be back when I come home from school to train with Greg again!!!

I’ve been training at the Underground Gym for roughly five month now, and I have noticed significant improvement in multiple aspects of my fitness, including strength, endurance, flexibility, agility and even focus. As many of the exercises require the necessary focus for proper performance, this has translated into increased kinesthetic awareness and mental discipline, as well as mental strength and agility. Coach Greg’s movement oriented training also allows for rapid increases in functional , high caliber strength and conditioning, resulting in improved strength, speed and endurance. As a result of this training, I’ve never felt more athletically geared and focused in my life. I highly recommend Coach Greg and the Underground Gym!

Oh my God, Where do I begin? Do I mention how my outlook on life has changed, for the positive? Since training with Greg, my Mind, Body, Strength, and Energy has been built up to such a level that has well exceeded any expectation I had. Should I admit having three children could wreak such havoc on a body that can now achieve levels of advance Olympic lifts, advanced bodyweight conditioning exercises, and various advanced kettlebells drills (I love those kettlebells!). Before I did not know how to pick up a free weight, barbell or a kettlebell; I now pick it up, throw it up, and ask for something heavier and more challenging. I am in the best shape of my life, and never felt better! Greg’s professionalism and expertise has motivated me in ways that have changed my life. And for that I am ever so grateful. I have now become a personal trainer and also an Underground Gym Certified Coach. If you’re looking for results, and to achieve major goals in your life, Greg is the man for you. You will gain confidence not only in your looks but in your everyday life. You’ll walk with your head held a little higher (a discreet confidence we are all looking for) all the while people are staring at your amazing body. Thai Boxing is another passion of mine, Greg has taught me to relax, learn, and strive to improve, stay positive and above all keep it fun.

Greg has been my Muay Thai coach now for about a year and a half. My whole life began to turn around upon meeting and getting to know him and his outstanding approach to total elite fitness. He is extraordinarily positive and technical in everything he does, and at the same time breaks it down for you in a simple manner. I can confidently say that working with Greg has made me recognize my endless physical and mental capabilities, and I am constantly moving forward in all aspects of my life. He has taught me far more than Thai boxing and clearly defines what a life coach is all about. The Underground Gym is such a breath of fresh air. To be able to walk into the best facility around and train with the most happy and goal oriented people is something you cannot find anywhere else. With that being said, you will get the results you want faster than you could ever imagine.

I’ve been training in Muay Thai kickboxing and weight training with Greg for the past two years, and I have never been stronger. Greg was able to work with me at an almost beginner level and build me up to the point where I am considering competing in Muay Thai tournaments. Physically, I have never been in better shape; my strength and endurance are the best they’ve ever been. Our workouts have even affected my mentality; I am ten times more confident and am able to achieve my fitness goals without being intimidated. Greg is truly an exceptional Muay Thai trainer, and one of the most dedicated people I have ever met. I look forward to working out with him every week.

The Underground Gym is definitely a place to go if you’d like to get a challenging, effective workout in ego free environment. Please do not be fooled by apparent lack of conventional weightlifting equipment or cardio machines – with Greg’s knowledge and expertise even your own body weight may be used as an extremely effective tool in achieving superb results. Over the last few years I’ve tried a variety of calisthenics and weightlifting regiments – none of them were even close to Greg’s routines when it comes to challenge, safety and results. I have quadrupled my levels of strength, gained 40 lbs of muscle, lost lots of bodyfat and countless inches of my waist. I now enjoy studying Muay Thai Kickboxing and Submission Grappling under Greg’s expert guidance and making progress in it everyday, feeling myself more confident and athletic. It is indeed possible to spend less time on your workout, get great results and stay injury free – Greg will show you how, just ask…

I first came to The Underground Gym to pick up some Muay Thai skills as a first time competitive fighter. With Greg as my Thai trainer I have learned a lot in such a short period of time. Greg has showed me the ropes of fighting Muay Thai. In just a year and a half I’ve seen tremendous improvement. Before I started coming to The Underground Gym I thought training was boring but with Greg it’s fun and worthwhile. Greg has taught me to be relaxed and he has motivated me constantly improve in order to reach my full potential as a top notch fighter.

I have been training with Greg for about 1 year now. I called him to discuss some self defense, basic weapon handling, joint flexibility and strengthening exercises as well as help with my MMA (grappling and kickboxing). I am a 44 year old RN and I have some old workout injuries and injuries from years of working in the nursing field. Greg is so well versed in so many Arts and styles he can teach it all. He is very unique and is the ultimate GURU. For the past few months he has been honing my MMA techniques . I have seen a tremendous improvement in my combinations and my fellow MMA classmates have noticed as well. I would definitely recommend meeting with Greg for what ever your individual goal would be. He will help you achieve that goal! Greg not only knows how to get one “in shape” and teach self defense on many levels. Greg is highly qualified and knowledgeable on health and nutrition and has helped me with my specific nutritional needs. Greg is a person of good character who I consider a friend. He has blessed my life in many ways and I would recommend him without reservation to anyone who is serious about taking charge of their life. I have been the unfortunate victim of an assault and have always pursued some form of self defense after that. I eventually took to MMA for the past 6 years and just love it, however; it is more sport oriented and it will not help you if someone attacks you with a gun or a knife. I plan on remaining a student of Greg’s for as long as the good Lord allows me too 🙂 Thank you Greg for your wonderful gifts! I could never thank you enough!!!!