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- The Stages of Sleep: Sleep is divided into four stages: non-REM (rapid eye movement) sleep stages 1, 2, and 3, and REM sleep. Each stage is characterized by distinct brain wave patterns and physiological changes. Non-REM sleep is divided into three stages, with stage 3 being the deepest and most restorative stage of sleep.
- The Sleep Cycle: The sleep cycle consists of alternating periods of non-REM and REM sleep, with each cycle lasting approximately 90 minutes. During the night, you go through multiple sleep cycles, transitioning between the different stages of sleep. REM sleep is associated with vivid dreams, while non-REM sleep is essential for physical restoration and repair.
- The Importance of Sleep Cycles: Understanding sleep cycles can help you optimize the quality and duration of your sleep. By ensuring that you get enough sleep cycles each night, you can wake up feeling refreshed and rejuvenated, with improved cognitive function, mood, and energy levels throughout the day.
Practical Exercise:
- Sleep Cycle Calculator: Use a sleep cycle calculator to determine the optimal time to go to bed and wake up based on your desired wake-up time. Aim to complete multiple sleep cycles each night to ensure that you wake up feeling refreshed and well-rested.
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