Do you know any interesting facts about how brains keep memories all night

Question: Do you know any interesting facts about how brains keep memories all night
- Keywords:
  brain,
  memory,
  sleep
Asked by Ellie to Liad on 15 Jun 2015.
- Liad Baruchin answered on 15 Jun 2015:
  
  Yeah,. Actually during the night the brain replays what we went through throughout the day.

Question: Do you know any interesting facts about how brains keep memories all night