Sleep Cycle

Sometimes known as the 'big sleep', a vampire's sleep cycle starts at sunrise and ends at sunset. It is an uncontrollable hibernation period, rendering a vampire's body completely unconscious and cold until it is time for them to awake again. During that period wounds are healed, hair will grow back to it's original length, and every detail that has changed in their body during their night awake, is reverted back to the exact same state that the body was in the day it crossed over. In certain cases, particularly with severe injuries, it can take several sleep cycles for a vampire's body to fully revert to it's original state. There is no way of avoiding a vampire sleep cycle and the regeneration period is involuntary; it will take hold of a vampire quickly and forcefully, providing only minutes to seek shelter before the vampire loses consciousness.