Alchaka
From Wookieepedia, the Star Wars wiki.
Alchaka was an extremely personal Force technique, used during meditation by the Jedi Knights of the Old Republic. It was a rigorous exercise, that was very hard to perfect. Alchaka meditation involved the repetition of certain positions and the movements required between them, often to the point of exhaustion, in order to help clear the mind and attune the body to the strength of the Force.
Jedi Master Obi-Wan Kenobi would run through this exercise during the Mission to Zigoola. He was slightly upset that Senator Bail Prestor Organa had witnessed him practicing.
