Morichro/Legends

Morichro is a proscribed technique entrusted to few Jedi during the years leading up to the last days of the Jedi Council. Yaddle, a long-lived Jedi Master, was one of the most prominent practitioners of this dangerous technique. Morichro works in a way similar to a Force trance. It slows a being's metabolism, breathing, and heart rate (or similar biological systems). Unlike a Force trance, Morichro can be used to affect beings other than the Jedi employing the technique. Abusing this power can be fatal. For this reason, the Jedi Council forbade its use. Interestingly enough, dark side Force-users are not known to use this technique, since studying Morichro typically requires the student to master less malevolent uses of the Force.