Recall from part two of the blogs dedicated to Jan de Jong's jujutsu grading system that his system can be divided into three parts: the...

Attilio Sacripanti (author of Advances in Judo Biomechanics , and Chair of Biomechanics of Sports at the University of Rome Tor Vergata) has...

My first blog on the Jan de Jong jujutsu grading system has received a record number of pageviews . It seems his grading system is of intere...

The photograph to the right is of another fatal one-punch victim. I've just been going through my undeleted and unfiled emails looking f...

Another one punch death ... This is what someone wrote about yet another newspaper article reporting yet another person has died after being...

How do you transmit your teachings if you develop a 'school of thought' (see Jan de Jong Pt 1 blog)? A common way within the martial...

'School judo deaths prompt protest in Japan' - this is the title of a disturbing article that was posted on The Age website on Janua...