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  2. Polyphasic sleep - Wikipedia

    en.wikipedia.org/wiki/Polyphasic_sleep

    The Uberman sleep schedule consists of a 30-minute nap every four hours, totaling 3 hours of sleep in a 24-hour period. [20] Other variations of this sleep pattern involve 8 naps throughout the day, or 20-minute sleep intervals as opposed to 30 minutes.

  3. Sleep - Wikipedia

    en.wikipedia.org/wiki/Sleep

    Hours of sleep recommended for each age group [93] 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) 9 to 11 hours Teenagers (13–17 years) 8 to 10 hours

  4. Relative hour - Wikipedia

    en.wikipedia.org/wiki/Relative_hour

    Relative hour (Hebrew singular: shaʿah zǝmanit / שעה זמנית; plural: shaʿot - zǝmaniyot / שעות זמניות), sometimes called halachic hour, temporal hour, seasonal hour and variable hour, is a term used in rabbinic Jewish law that assigns 12 hours to each day and 12 hours to each night, all throughout the year.

  5. Do You Really Need 8 Hours Of Sleep? Why Experts Are ... - AOL

    www.aol.com/really-8-hours-sleep-why-120000962.html

    More than half (56 percent) of perimenopausal women ages 40 to 59 sleep less than seven hours per night, ... which is your body’s 24-hour clock,” says Kogan. Once you do this consistently ...

  6. Is 6 hours of sleep at night enough? - AOL

    www.aol.com/news/6-hours-sleep-night-enough...

    Is six hours of sleep enough? Doctors explain how much sleep you need, quality sleep basics, health effects of sleeping 6 hours and tips for better sleep. ... (4–12 months): 12–16 hours ...

  7. Is 4 hours of sleep enough? What sleeping too little does to ...

    www.aol.com/news/4-hours-sleep-enough-sleeping...

    Experts explain what happens to your body when you sleep four hours, health effects of sleep deprivation and tips to improve sleep. ... (6–12 years old): 9–12 hours. Teenagers (13–18 years ...

  8. Sleep deprivation - Wikipedia

    en.wikipedia.org/wiki/Sleep_deprivation

    A 2004 editorial in the journal Sleep stated that, according to the available data, the average number of hours of sleep in a 24-hour period has not changed significantly in recent decades among adults. Furthermore, the editorial suggests that there is a range of normal sleep time required by healthy adults, and many indicators used to suggest ...

  9. Doctors Say This Viral "Sleep Rule" Actually Works - AOL

    www.aol.com/doctors-viral-sleep-rule-actually...

    November 23, 2024 at 8:12 AM. ... How to follow the 10-3-2-1-0 sleep rule 10 hours before bed: No more caffeine ... 1 hour before bed: No more screen time. Screens — including TV, your phone and ...