ARENA Training Center welcomes you. We are a family owned and operated dojo. We have been serving the communities within Lake County since 2011. We offer Judo, Boxing, and recently added Boot Camp exercise class. We cater to all ages and skill levels to gain ability and knowledge. We ensure the proper training, technique, and attention is given to all our students to achieve success. We are committed to guiding your child or yourself to reach the goals you want whether its on or off the competition mat. Enjoy our website, learn who we are, what our message is, and what you can gain from joining us.

We are a competitive dojo and openly welcome recreational students. Many of our students have placed in state, regional, national, and inter-national competitions. From beginners to seasoned black belts. Experience the family friendly environment and gain skills for the competitive edge.




Boxing is a classic sport with a long and rich history. Regardless of skill level and ability when you walk in, boxing will make you stronger, leaner, faster, etc. If you are looking to enter the boxing ring or do it for recreational exercise give us a look.


Judo is a representative Japanese sport which has an international character. Judo contributes enormously to friendship and peace among nations of the world today by offering an area in which people can come together for a fruitful exchange. Judo helps promotes the happiness and prosperity  of all mankind. There can be no loftier goal. Judo is a mix of standing and ground techniques. It incorporates submissions, grappling, jujitsu, take-downs, throws, and immobilization, chokes and arm bars. (chokes and arm bars are for advanced students.



Boot Camp is a new excercise program recently added. This exercise class focuses to shed weight,  gain lean muscle mass, increase strength, flexibility, and self confidence. Join us in a friendly group environment structure with positive encouragement to reach your goals for all excerise skill levels.

Benefits of ARENA Training Center Judo

Focus and Self Control: Judo will assist your child's attention span. This will allow them become better listeners in the dojo, in the classroom, and at home.

Confidence and Self-Esteem: With progression of our training program comes increased skills and hard earned achievements they will take pride in

Self Defense and Safety: Competition focused techniques in lessons may be used in life for evasion and become more aware of their surroundings. Judo is the safest contact sport for children under 13 yrs of age. (Source: American college of sports medicine)

Decision Making: Your child will learn to make quick and well informed decisions by balancing pros and cons of their and others actions

Character Development: Students will learn to win and lose in a positive manner that will help them in life and become well rounded individuals

Physical Strength  and Conditioning: Allow your child additional physical fitness that goes beyond gym class. After rowing, Judo's physical exercise has the highest calorie consumption: 363 calories for 1/2 hour. (Source: World Health Organization). Your child will be healthier and feel better while getting and staying in shape.

Humility and Modesty: Your child will become both the student and teacher as they practice and spar with others in class as they share knowledge

Friendship and Having Fun: Your child will look forward to class each week as they increase their skills, see their classmates, and have fun doing it



The 2020 Olympics will be held in Tokyo, Japan. Instructor Nefeli is actively working towards her dream to qualify for the Olympic Games in Judo. She is ranked #1 in the US and #17 in the world for her weight class. Donations are currently being collected to help offset traveling expenses as she competes in the Pan-American Open in Santo Domingo, European Open in Serbia, and Grand Prix in Zagreb to achieve the required qualifying points. Lets help her reach her American dream and grant our country the ability to be represented by the best in our nation! For more information to give a donation, please CLICK HERE.


We will be hosting a series of self defense seminars to help fund Nefeli's path towards her dream to reach the 2020 Games. Why not join in the effort to help a Lake County, IL local and actively learn some defense moves while having fun.



2018 Lima Pan American Open


We are proud to announce that our very own instructor Nefeli Papadakis will be competing in the Lima Pan American Open hosted March 17 and 18. She is on her journey to compete, win, and gain points towards reaching the Olympic Games in 2020.  She is one of many international competitors who will be at the event. Let's cheer her on and support her with great pride from our dojo and Lake County, IL.  Please view the link below for details on the competition.

Link: 2018 Lima Pan American Open



Stand Tall!

 Self Defense Seminar


Heading to college in the fall, moving away to start that new job, work evenings, or any reason. Its important to know how to remain safe. We will be hosting a self defense seminar on Saturday March 24. Learn the basics for defending yourself and staying safe.  All proceeds will be donated to help fund our very own Olympic hopeful instructor Nefeli Papadakis reach the 2020 Games.




Fall In!

Boot Camp Class


Your New Year's resolutions don't have to end on January 2nd. Join our new Boot Camp exercise class led by multi-national Judo champion Nefeli Papadakis. Time to get back into the shape you always wanted. No time like the present to make that change for the better you. So it's time to FALL IN!!





We are proud to announce that two of our students competed and placed in the recent Wahadashi/Wisconsin State Championships held in Milwaukee on the weekend of January 26th. Both fought a lot of tough matches and performed great. They both placed in 3rd place in their classes!





  • Monday June 11 to Friday June 15
  • Price: $120 per student
  • Training schedule pending
  • Hotel arrangements pending for those outside the Madison area

Judo Jujitsu Madison will be hosting a kids Judo training camp this summer. 8th degree black belt, international referee, and coach Sensei Os. Millan will be leading the staff for the camp.

  • Camp Location:
  • Judo Jujitsu Madison
  • 6713 Odana Rd. #5
  • Madison, WI. 53719
  • 608.577.8728
  • Drop off: 8:00AM - 8:30AM
  • Pick up: 4:30PM to 5:00PM


Judo class photographs provided by Andrew Hernandez