Odinsleep

"Father has fallen into the Odinsleep."

- Loki

The Odinsleep is a state of deep sleep where Odin recharges the Odinforce an immense magical force and is left as vulnerable as a mortal. The duration of the Odinsleep varies from time to time. Sometimes it's for only a single night while other occasions are for more than a week.

History
After Loki angrily yelled at Odin for not telling him of how he was adopted Odin went into the Odinsleep, which caused the All Father to collapse in grief. Loki later called some soldiers that took him to the bed chamber where Odin is supposed to stay while he is in the Odinsleep. Not so long after Loki and Frigga visited Odin's bedside while he was still in the Odinsleep. When Thor found Mjølnir but failed to take it, Odin sensed this and a tear fell from his eye. Later, Laufey tried to kill Odin as part of Loki's plot, but was double crossed. During Thor's fight with Loki, Odin woke up from the Odinsleep and tried to save them from falling off the Bifrost Bridge.