Science, a group of participants played Tetris on and off for a period of several days. On game days, researchers would wake the participants every few minutes in the first hour of when they fell asleep—they discovered that most recalled dreaming of floating objects that moved just like in game.
Gerhman says that takeaways like these provide evidence that our dreams are one of methods adapted by our brains to work through the events of the day. “One thing that we do know is that the emotional content reflects our waking emotions—if we're experiencing a stressor or anxiety that actually follows us into sleep,” says Gerhman.
Read more on glamour.com