Editing Sleep (section)

=== Recommended duration ===
[[File:"Plenty of sleep keeps him on the job" - NARA - 514792.jpg|thumb|World War II poster issued by the US government]]Children need many hours of sleep per day in order to develop and function properly: up to 18 hours for [[newborn]] babies, with a declining rate as a child ages.<ref name="autogenerated1"/> Early in 2015, after a two-year study,<ref name="sleepfoundation">{{cite journal | vauthors = Hirshkowitz M, Whiton K, Albert SM, Alessi C, Bruni O, DonCarlos L, Hazen N, Herman J, Katz ES, Kheirandish-Gozal L, Neubauer DN, O'Donnell AE, Ohayon M, Peever J, Rawding R, Sachdeva RC, Setters B, Vitiello MV, Ware JC, Adams Hillard PJ | display-authors = 6 | title = National Sleep Foundation's sleep time duration recommendations: methodology and results summary | journal = Sleep Health | volume = 1 | issue = 1 | pages = 40–43 | date = March 2015 | pmid = 29073412 | doi = 10.1016/j.sleh.2014.12.010 | s2cid = 205190733 | url = https://www.sleephealthjournal.org/article/S2352-7218(15)00015-7/fulltext | access-date = 4 February 2015 | url-status = live | archive-url = https://web.archive.org/web/20171114014645/https://www.sleephealthjournal.org/article/S2352-7218(15)00015-7/fulltext | archive-date = 14 November 2017 }}</ref> the [[National Sleep Foundation]] in the US announced newly revised recommendations as shown in the table below.

{| class="wikitable"
|+Hours of sleep recommended for each age group<ref name="sleepfoundation" />
|-
! Age and condition
! Sleep needs
|-
| Newborns (0–3 months)
| 14 to 17 hours
|-
| Infants (4–11 months)
| 12 to 15 hours
|-
| Toddlers (1–2 years)
| 11 to 14 hours
|-
| Preschoolers (3–4 years)
| 10 to 13 hours
|-
| School-age children (5–12 years)&nbsp;&nbsp;&nbsp;&nbsp;
| 9 to 11 hours
|-
| Teenagers (13–17 years)
| 8 to 10 hours
|-
| Adults (18–64 years)
| 7 to 9 hours
|-
| Older Adults (65 years and over)
| 7 to 8 hours
|}