Sensei Len Glazer has been studying martial arts for over 30 years. He commenced training in Okinawan Karate in 1982 and has been studying Karate and Jujitsu with Master Dan Cohen since 1990. Sensei Glazer was promoted to the rank of Yondan (fourth-degree black belt) in Seirenkai Jujitsu in 2013 and Yondan in Seirenkai Karate in 2015. He is a certified instructor of both arts having earned his Instructor Certification and the title of Sensei in 1994 and has been a Chief Instructor in multiple Massachusetts dojo since that time. He also continues to train as a member of the Yudanshakai (Black Belt Association) and at international seminars. Sensei Glazer often incorporates his academic and professional background in psychology with his martial arts teaching and training.