sleep graph
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Stockphotos.ro (c) 2024. All stock photos are provided by Dreamstime and are copyrighted by their respective owners.
sleep graph |
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| navigate by keyword : anatomy and awake biology cycle down drawing during eight from graph health hour human illustration medical medicine period rem science sleep stage stages the through |
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| Graph of the stages of sleep during an 8 hour sleep period, from awake, through stage 2 and REM sleep, down to stage 4. |
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Stockphotos.ro (c) 2024. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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