Wordless Wednesday: What a sleep cycle looks like || Sleep Fundamentals

We have several cycles of sleep during the night. Here's what they look like from a sleep technologist's perspective

A hypnogram shows a diagram of your sleep cycles over the night.


  • W = Stage Wake

  • R = Stage REM

  • N1 = Stage 1 (nonREM)

  • N2 = Stage 2 (nonREM)

  • N3 = Stage 3 (nonREM)

About Tamara Kaye Sellman (621 Articles)

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