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Familial natural short sleep is a rare, genetic, typically inherited trait where an individual sleeps for fewer hours than average without suffering from daytime sleepiness or other consequences of sleep deprivation. This process is entirely natural in this kind of individual, and it is caused by certain genetic mutations.
In the first week of life, infants will sleep during both the day and night and will wake to feed. Sleep cycle duration is usually short, from 2–4 hours. [7] Over the first two weeks, infants average 16–18 hours of sleep daily. Circadian rhythm has not yet been established and infants sleep during the night and day equally. [3]
Familial natural short sleep (FNSS) is a distinct category of habitual short sleep. Individuals with this trait usually get 4–6.5 hours of sleep per day but do not have daytime sleepiness and do not need catch-up sleep on the weekends. After sleep deprivation, these individuals have less of a sleep deficit than individuals without FNSS.
A common form of biphasic or polyphasic sleep includes a nap, which is a short period of sleep, typically taken between the hours of 9 am and 9 pm as an adjunct to the usual nocturnal sleep period. Napping behavior during daytime hours is the simplest form of polyphasic sleep, especially when the naps are taken on a daily basis. The term ...
A set of triplets who refuse to sleep are cracking each other up — and TikTok is laughing along. “They feed off each other so when one is laughing, so are the others,” Julia Platsman, a ...
A nap is a short period of sleep, typically taken during daytime hours as an adjunct to the usual nocturnal sleep period. Naps are most often taken as a response to drowsiness during waking hours. A nap is a form of biphasic or polyphasic sleep , where the latter terms also include longer periods of sleep in addition to one period.