The group called the Followers of Palawa had already mastered a particular form of hibernation trance before 24,500 BBY. This trance allowed those who practiced it to enter a very deep sleep and remain in that state for many decades, all without growing older. Records show that certain individuals remained asleep for over seventy standard years while using this trance.
Arden Lyn, who was a Follower of Palawa and also held the title of Steel Hand of Palawa before she joined the Legions of Lettow, knew about this technique. It is believed that she combined it with her Kashi Mer talisman to withstand Jedi Grand Master Awdrysta Pina's use of morichro, which was intended to stop her heart.
- Jedi vs. Sith: The Essential Guide to the Force
- The Complete Star Wars Encyclopedia