File:SleepCycles.jpg
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SleepCycles.jpg (670 × 494 pixels, file size: 33 KB, MIME type: image/jpeg)
A diagram of sleepcycles of a normal person
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:06, 21 February 2016 | | 670 × 494 (33 KB) | S137552 (talk | contribs) | A diagram of sleepcycles of a normal person |
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