Passage:
When it comes to sleep quality, overall duration is important, as is the cycle of
sleep states. Sleep consists of five different states, the first four of which are
non-Rapid Eye Movement (NREM) sleep, with the fifth being Rapid Eye
Movement (REM) sleep. When individuals fall asleep, they move through the
four stages of NREM sleep, with the stages getting deeper progressively,
resulting in the sleeper becoming less likely to awaken due to external stimuli,
before moving to REM sleep, when most dreaming occurs. The cycle of these
five stages is essential for sleep quality.
Assignment:
What can be done to improve sleep duration and quality?
