Kelno'reem

From SGCommand

"Colonel O'Neill has officially informed me that—I have my 'mojo' back."

—Teal'c, after returning the fact he can Kelno'reem again

Kelno'reem is the Jaffa meditation ritual akin to sleep. While the Jaffa meditates, the Goa'uld symbiote repairs any health ailment that the Jaffa suffers from. It can also be used to slow down the Jaffa's heart, and so much that it can beat once per minute, or even stop the heart altogether. Teal'c often lights candles to perform the meditation. Whether other Jaffa do the same is unknown. (SG1: "Holiday", "Descent", "Fallen")

In 2003, after Teal'c lost his symbiote, Teal'c was incapable of performing the ritual, since the symbiote is often key to Kelno'reem. After a few months, Teal'c was able to perform the Kelno'reem again, despite not needing it anymore, since he has the capability to sleep. (SG1: "Orpheus")