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It is a phenomenon in which the sleeper feels the presence of a supernatural, malevolent being which immobilizes the person as if sitting on their chest or the foot of their bed. The word "night-mare" or " nightmare " was used to describe this phenomenon before the word received its modern, more general meaning. [ 1 ]
Another major cause of this sleep eating subtype of sleepwalking is sleep medication, such as Ambien for example (Mayo Clinic). There are a few others, but Ambien is a more widely used sleep aid. [38] Because many sleep eaters prepare the food they consume, there are risks involving burns and such with ovens and other appliances.
A person who goes to bed at midnight and rises at 8 thus has the same chronotype as a person who goes to bed at 1 a.m. and rises at 7; the midpoint of sleep is 4 a.m. for both of these individuals. People with early chronotypes will usually not be able to "sleep in", even if they have stayed up later than usual.
"Stomach sleeping is probably the least desirable way to sleep in bed, not just for your back but also for stiff, strained necks — unless you want your face stuffed into a pillow, you're forced ...
Sleep paralysis is a state, during waking up or falling asleep, in which a person is conscious but in a complete state of full-body paralysis. [1] [2] During an episode, the person may hallucinate (hear, feel, or see things that are not there), which often results in fear. [1] [3] Episodes generally last no more than a few minutes. [2]
Somnophilia (from Latin somnus "sleep" and Greek φιλία, -philia "friendship") is a paraphilia in which an individual becomes sexually aroused by someone who is asleep or unconscious. [1] [2] [3] The Dictionary of Psychology categorized somnophilia within the classification of predatory paraphilias. [4]
A higher occurrence is reported in people with irregular sleep schedules. [4] When they are particularly frequent and severe, hypnic jerks have been reported as a cause of sleep-onset insomnia. [3] Hypnic jerks are common physiological phenomena. [5] Around 70% of people experience them at least once in their lives with 10% experiencing them daily.
Today in most societies people sleep during the night, but in very hot climates they may sleep during the day. [152] During Ramadan, many Muslims sleep during the day rather than at night. [153] In some societies, people sleep with at least one other person (sometimes many) or with animals.