14371942_The_Body_Clock__Meridian
[Time] 11:00 pm - 1:00 am [Function] This meridian is associated with regeneration and sleep which is why we are told that the hours before midnight are important! If restless during this time, this indicates that the gallbladder and liver are overwhelmed and the toxins remaining in circulation are acting as an irritant to the brain. Emotions associated with this time window include bitterness and resentment. [Meridian] 
Gall Bladder
The Body Clock
Meridian