Odinsleep

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

Thor
After Loki yelled at Odin for not telling him of how he was adopted Odin went into the Odinsleep. Loki called some soulders that took him to the bed where Odin is supposed to stay when he is in the Odinsleep. Not so far later Loki and Frigga visited Odin while he was still in the Odinsleep. Then Thor found Mjølnir but failed to take it. Odin sensed this and a tear fell from his eye. Later Laufey tried to kill him but was stopped by Loki. Then Thor came and fought Loki. During the fight Odin woke up from the Odinsleep and tryed to save them from falling off the Bifrost Bridge.