Jonah Ewell

Jonah Ewell is a third degree black belt in judo and a former two time national champion in the masters M3 category. As the founder of 510 Judo in California, he led a community of judoka that produced national champions in youth and masters categories. He has been teaching judo professionally for over ten years. 

He also has a purple belt in Brazilian jiujitsu and is a USA Judo certified National Coach.