The term 'SLEEP STATE' can be broken down into two crossword solutions: REM (3 letters) and SLEEP (5 letters). REM stands for Rapid Eye Movement, which is a stage of sleep characterized by rapid eye movements, increased brain activity, and dreaming. During this stage, the body is in a state of paralysis, meaning that the person cannot move or act out their dreams. SLEEP is a natural state of rest that is essential for physical and mental health. It is characterized by decreased brain activity, slower breathing, and reduced muscle activity.