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  1. REM sleep: What is it, why is it important, and how can you get …

  2. How Much Deep, Light, and REM Sleep Do You Need? - Healthline

  3. REM Sleep: What It Is and Why It’s Important - Sleep Foundation

  4. 5 Ways to Get More REM Sleep - Sleep Foundation

  5. How Much REM Sleep Do You Need: Amount, Importance, and Tips - Health

  6. Optimal REM Sleep by Age | Improve Sleep Quality & Well-being

  7. How Much REM Sleep Do You Need and What Is REM? | Sleep

  8. What is REM Sleep? - Sleep Doctor

  9. Rapid eye movement sleep - Wikipedia

  10. What Is REM Sleep and Why Is It Important? - The New York Times