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A pregnant woman sleeping on her back after 28 weeks of pregnancy may be a risk factor for stillbirth. [22] [27] After a stillbirth there is a 2.5% risk of another stillbirth in the next pregnancy (an increase from 0.4%). [28] In the United States, highest rates of stillbirths happen in pregnant women who: [29] are of low socioeconomic status
Infant sleep is an act of sleeping by an infant or a newborn. It differs significantly from sleep during adulthood. [ 1 ] [ 2 ] [ 3 ] Unlike in adults, sleep early in infancy initially does not follow a circadian rhythm .
Although sleeping in the supine position without sufficient tummy time may change the physical appearance of the head through plagiocephaly and consequently promote developmental delays, [5] [6] [13] [14] regardless of these effects, it is essential that infants are placed to sleep on their back, because of the risk of SIDS.
The sleeping child (maghrebi Arabic: ragued or bou-mergoud), according to Moroccan and the wider Maghrebian folk belief, is a fetus which has been rendered dormant by black or white magic and may eventually wake up and be born after the normal pregnancy term.
The Sleeping Beauty (1992), song on album Clouds by the Swedish band Tiamat. Sleeping Beauty Wakes (2008), an album by the American musical trio GrooveLily. [95] There Was A Princess Long Ago, a common nursery rhyme or singing game typically sung stood in a circle with actions, retells the story of Sleeping Beauty in a summarised song. [96]
Sleep is a state of reduced mental and physical activity in which consciousness is altered and ... up to 18 hours for newborn babies, with a declining rate as a ...
Current genome-wide association studies suggest that sleep behaviors such as sleep length are highly polygenic, with most heritability explained by variants with small effects. The largest non-pathogenic genetic effect on sleep duration found to date is a change of 2.44 [32] or 3.24 [33] minutes associated with variation in the PAX8 gene.
Rapid eye movement sleep (REM sleep or REMS) is a unique phase of sleep in mammals (including humans) and birds, characterized by random rapid movement of the eyes, accompanied by low muscle tone throughout the body, and the propensity of the sleeper to dream vividly. The core body and brain temperatures increase during REM sleep and skin ...