Re: atemi is 90% of Aikido
I really didn't understand aikido and the importance of atemi until I started studying BJJ and Judo. Both arts typcially will isolate this part out of the equation. It becomes very difficult to demonstrate the dynamic of aikido once you eliminate the core of what makes aikido aikido.
(this is not to say that atemi is not apart of the BJJ or Judo curriculm...just not emphasized or as important to things as it is in aikido).