Calvin Coolidge once said “Nothing in the world can take the place of persistence. Persistence and determination alone are omnipotent”.

Karel Pravec, the “Fox” has demonstrated that persistence and determination to become one of my finest instructors.

Karel was one of my first students in 1993 when I arrived in United States. With only a select few Karel has matriculated to black belt level, his technical know how and talent has shown in his students. Karel still competes at the highest level. I am proud he is continuing what my family and I have dedicated our lives to. As a friend and instructor I highly recommend his academy. Train hard and prosper.

-RENZO GRACIE

"How many people can say they received their Black Belt from Renzo Gracie? I have over 25 years experience in the martial arts and I am currently training with Karl Pravec at Silver Fox Brazilian Jiu Jitsu located at the Bob Long School of Self Defense in Lodi. In my opinion, Karl is a very high level Renzo Gracie Black Belt and dedicated instructor. Karl has a great mind for jiu-jitsu and is a great technician of the art. My BJJ game has improved tremendously since I have been attending Karl's classes. If you want to learn from one of the area's best Brazilian Jiu-Jitsu instructors then Karl Pravec is your man. The school is filled with life long martial artists from every discipline which promotes a great training atmosphere and very conducive to improving your Bjj game. Thanks Karl!"

-DAVE PALADINO
Director of C.O.R.E. the center of fitness
Master Certified Personal Trainer
3rd Degree Black Belt in Goshin Do Nagai Ryu Karate
3rd Degree Black Belt in Samaruai Nagai Ryu Jiu-Jitsu
1st Degree Black Belt in Shukokai Karate
Renzo Gracie/Karl Pravec Purple Belt
Group Fitness Instructor
MMA Strength and Conditioning Coach

"I started Brazilian Jiu-Jitsu (BJJ) training less than a year ago to condition my body. I had my reservations about training because I always associated BJJ with young guys in prime shape with an incredible endurance level for physical activity. I knew any form of activity I started would be difficult given my current physical state and being 34 years old. I did not expect the immediate results that I achieved or how this martial art would transform my lifestyle. Through the personalized attention I received at Silver Fox BJJ, not only from the instructors, but also from the other students I lost over 40 pounds in the first 4 months and gained a control over myself that has impacted my way of life.

One of the first things I learned was that this form of martial arts is not about who is stronger, bigger or can power punch. It is about technique. I train with guys of various belt degrees from different arenas of martial arts and when you are on your back the only thing that gives you leverage over your opponent is technique. The art of BJJ is ageless. It is a great way to workout and to condition your mind and body while learning self-defensive moves.

I have been extremely fortunate to learn Brazilian Jiu-Jitsu from one of the best, Karel Pravec. His personal style of teaching allows you to progress at your own speed through intense training. At Silver Fox BJJ you are exposed to all levels of martial arts which allow you to learn quicker and advance more. The bonds that I have formed with the instructors and other students are life-long. We train hard as a group whether for competition or personal development and are there for each other for support and encouragement. I am extremely grateful for what I have learnt and received from my BJJ family and how it continues to change my life for the better."

-JASON BARON

I learned a few years back that, to be the best, you have to train with the best. After carefully researching schools within my area (and a few
poor experiences), I found home at Silver Fox BJJ.

I was impressed from day one. I was well received, and there were plenty of quality guys of all shapes and levels to roll with. I continue to
learn of ways to advance my game with every class, and my technique has improved tremendously. I have been training in BJJ for years, and have
never experience such rapid and solid progress.

I have gotten tons of help with my BJJ technique, but also with my WHOLE game, in a fun and practical training environment. Karl and his
instructors have inspired great improvements for me, in and out of the mat by the lead of their example. Thanks Karl!

-HECTOR ESTRADA

I have been training with Karl for the last three years.  Since my training with Karl, my submissions have well improved. 

Before training at Silver Fox, I never submitted an opponent in a tournament.  Now most of my wins are by submission. 

Karl is a very knowledgeable instructor who, like most black belts, has not stopped learning and training when he achieved his black belt. 

I would say Karl is one of the most knowledgeable instructors around and caters to all of his students. 

It has been almost a year since I found myself at the front door of Silver Fox BJJ school in Lodi, NJ. Through a sleep study test, I was found to have sleep apnea, a condition where a person would stop breathing for periods of time. It was mainly due to my weight, as I was about 185 lbs at the time, which for my 5'4 ft/in frame is overweight. I used to train in boxing during my high school years and decided to skip on gym memberships and take up Brazilian Jiu-Jitsu to lose the pounds.

After several trips to other BJJ schools, I found my home at Silver Fox. Karl and the instructors at the school are excellent and even though the atmosphere is relaxing and laid back, the talent of the BJJ practitioners here are of the highest caliber. As I am writing this, I am at 148 lbs and in the process of getting to my target weight of 140 lbs. My wife tells me I hardly snore now when I sleep. Not to mention I am in the best shape of my life and my BJJ game keeps on improving.

What started off as a goal to lose weight has become a way of life, I encourage people out there to give the sport of BJJ a try. I must tell you that it is not the easiest thing in the world, but then again, nothing worth having is.

-CESAR OLLERES