AP PSYCHOLOGY

Detailed explanation-1: -REM stands for Rapid Eye Movement and REM sleep is the final stage of sleep in every sleep cycle. We usually need four to five sleep cycles throughout the night to feel well-rested. During REM sleep, your brain activity increases, your pulse quickens, and you have dreams.

Detailed explanation-2: -Sleep is generally divided into two stages: REM (rapid eye movement) and NREM (non-rapid eye movement). NREM is further split into three parts: starting to fall asleep, light sleep, and deep sleep. During deep sleep, your breathing slows down, your blood pressure drops, and your energy is renewed.

Detailed explanation-3: -During the night, you cycle through two types of sleep: non-rapid eye movement (non-REM) sleep and rapid eye movement (REM) sleep. Your brain and body act differently during these different phases.

Detailed explanation-4: -On average you’ll go through 3-5 REM cycles per night, with each episode getting longer as the night progresses. The final one may last roughly an hour. For healthy adults, spending 20-25% of your time asleep in the REM stage is a good goal. If you get 7-8 hours of sleep, around 90 minutes of that should be REM.

Detailed explanation-5: -Why Is REM Sleep Important? All sleep is important, but REM sleep in particular plays an important role in dreaming, memory, emotional processing, and healthy brain development.