{ bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, pbjsCfg = { {code: 'ad_leftslot', pubstack: { adUnitName: 'cdo_leftslot', adUnitPath: '/23202586/cdo_leftslot' }, mediaTypes: { banner: { sizes: [[120, 600], [160, 600]] } }, { bidder: 'ix', params: { siteId: '195454', size: [336, 280] }}, { bidder: 'ix', params: { siteId: '195453', size: [320, 50] }}, Such states provoke considerable gnashing of teeth among the unfortunates whose task is to score, Answering this question will help provide us with an understanding of what produces both the similarities and differences in, If it were not, we would always be in a dream state, for dopaminergic neurons fire similarly during all stages of the. Interaction between d-amphetamine and ethanol with respect to locomotion, stereotypies, ethanol sleeping time, and the kinetics of drug elimination. { bidder: 'ix', params: { siteId: '195455', size: [320, 100] }}, Definition of "sleep" at Define.com Simple Ad-Free English Dictionary with Hyperlinks to The Free World Bank - A BIG Thinking Scientific Save the World High Level Concept on Amazon S3 { bidder: 'appnexus', params: { placementId: '11653860' }}, They work, go to school, college, or university, or do other things. }); - National Sleep Foundation", "The Science of Sleep: Why You Need 7 to 8 Hours a Night", Guidelines for the care and use of mammals in neuroscience and behavioral research, "Stages of Sleep - Non-REM and REM Sleep Cycles", "Healthy Sleep Habits: How Many Hours Does Your Child Need? { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_topslot_728x90' }}, { bidder: 'sovrn', params: { tagid: '346693' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '1666926', position: 'btf' }}, { bidder: 'ix', params: { siteId: '195454', size: [300, 250] }}, "sign-up": "https://dictionary.cambridge.org/auth/signup?rid=READER_ID", Small babies sleep many times a day; human babies do not develop circadian rhythms before they are 3 – 4 months old. - Narcolepsy, the inability to control the brain’s sleep/wakefulness cycle which leads to daytime sleepiness and falling asleep at unexpected times. { bidder: 'sovrn', params: { tagid: '346693' }}, sing. Pronunciation /slēp/ /slip/ See synonyms for sleep. { bidder: 'openx', params: { unit: '539971067', delDomain: 'idm-d.openx.net' }}, - Restless Leg Syndrome is a need to move one’s leg while resting. The improvement disappeared after sleeping horizontally for a night. { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_rightslot' }}, The original meaning of the word was "to slap", which was related to the word for "flabby" (not hard or firm). { bidder: 'openx', params: { unit: '539971069', delDomain: 'idm-d.openx.net' }}, cmpApi: 'iab', Présent simple, 3 e pers. { bidder: 'appnexus', params: { placementId: '11654208' }}, This can cause poor sleep, too. } { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, sleep. bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776358', position: 'atf' }}, Information and translations of Sleep in the most comprehensive dictionary definitions resource on … { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, { bidder: 'sovrn', params: { tagid: '705055' }}, Sleep is different from states of coma, hibernation and death by the fact that it can be rapidly reversed. 1 A condition of body and mind that typically recurs for several hours every night, in which the nervous system is relatively inactive, the eyes closed, the postural muscles relaxed, and consciousness practically suspended. { bidder: 'sovrn', params: { tagid: '446383' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776130', position: 'btf' }}, { bidder: 'ix', params: { siteId: '195453', size: [320, 100] }}, {code: 'ad_contentslot_2', pubstack: { adUnitName: 'cdo_mpuslot', adUnitPath: '/23202586/cdo_mpuslot' }, mediaTypes: { banner: { sizes: [[300, 250], [336, 280]] } }, At the age of 1 year, they sleep for about 14 hours. You are very tired and your brain is not functioning at its normal capacity. bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776336', position: 'btf' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot' }}]}, {code: 'ad_rightslot2', pubstack: { adUnitName: 'cdo_rightslot2', adUnitPath: '/23202586/cdo_rightslot2' }, mediaTypes: { banner: { sizes: [[300, 250], [120, 600], [160, 600]] } }, googletag.pubads().enableSingleRequest(); bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776160', position: 'atf' }}, params: { bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776156', position: 'atf' }}, Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. "sign-out": "https://dictionary.cambridge.org/auth/signout?rid=READER_ID" {code: 'ad_rightslot2', pubstack: { adUnitName: 'cdo_rightslot2', adUnitPath: '/23202586/cdo_rightslot2' }, mediaTypes: { banner: { sizes: [[300, 250], [120, 600], [160, 600]] } }, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_mpuslot' }}, sleeps \ˈslips\ ou \ˈsliːps\ Prétérit slept \ˈslɛpt\ Participe passé slept \ˈslɛpt\ Participe présent sleeping \ˈsli.pɪŋ\ ou \ˈsliː.pɪŋ\ voir conjugaison anglaise: sleeping \ˈsli.pɪŋ\ (États-Unis), \ˈsliː.pɪŋ\ (Royaume-Uni) Participe présent de sleep. { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_mpuslot' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776144', position: 'btf' }}, { bidder: 'appnexus', params: { placementId: '11654189' }}, { bidder: 'ix', params: { siteId: '195467', size: [300, 250] }}, var mapping_leftslot = googletag.sizeMapping().addSize([1063, 0], [[120, 600], [160, 600], [300, 600]]).addSize([963, 0], [[120, 600], [160, 600]]).addSize([0, 0], []).build(); window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date; In humans, other mammals, and most other animals that were studied, sleeping regularly is essential for survival. A study completed by the VAHS in San Diego and the UCSD School of Medicine in the year 2000 monitored activit… { bidder: 'ix', params: { siteId: '555365', size: [300, 250] }}, Definition of sleep in in English: sleep in. {code: 'ad_topslot_b', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/23202586/cdo_topslot' }, mediaTypes: { banner: { sizes: [[728, 90]] } }, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_mpuslot2' }}]}]; { bidder: 'openx', params: { unit: '541042770', delDomain: 'idm-d.openx.net' }}, googletag.cmd.push(function() { ga('set', 'dimension2', "entryex"); gdpr: { [10], Many words related to "sleep" have very different meanings, though. Sleep scientists have explored these changes in depth, and their definition of sleep is tied to characteristic patterns of brain waves and other physiological functions. [5] We do know, however, that sleep is necessary to most animals for survival. { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_btmslot' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_btmslot' }}]}, There are many things that influence sleep. They can, however, wake up from sleep more easily than from hibernation or coma. filter: 'include' { bidder: 'openx', params: { unit: '539971070', delDomain: 'idm-d.openx.net' }}, During the day time, most people are awake. { bidder: 'ix', params: { siteId: '195451', size: [300, 250] }}, { bidder: 'appnexus', params: { placementId: '11654151' }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776140', position: 'atf' }}, Being too full/overeating since the digestive system will not work to digest those foods processed, Sitting in front of a TV will not help you fall asleep because of the powerful light source being produced, Drinking too much as it will cause you to use the bathroom multiple times during the night, Going on a phone or playing a video game makes it hard because the artificial light from the screen simulates the mind and body, Any type of pain such as back, joint, tooth pain can make you suffer from sleep and you should probably get it checked out, Having cold feet could also affect it which is why you should wear something to keep warm, Avoid caffeine at all costs which will result in “all-nighters”, Stress can make the brain stay active by thinking of all the things on one’s mind, Snoring can make sleep difficult because you do not have silence and cannot fall back asleep, avoid extreme emotion in the hours before sleep, trying to get up at the same time every day (sticking to a routine), sleeping in varying positions. bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776160', position: 'atf' }}, {code: 'ad_btmslot_a', pubstack: { adUnitName: 'cdo_btmslot', adUnitPath: '/23202586/cdo_btmslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, Cambridge Dictionary +Plus Stage II is also light sleep. Sleep Deprivation describes the cumulative effect of a person not having sufficient sleep. {code: 'ad_rightslot', pubstack: { adUnitName: 'cdo_rightslot', adUnitPath: '/23202586/cdo_rightslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, Sleep is defined as to slumber, rest or be in a state of inactivity like sleep. The word "sleep" comes from the old Old Germanic verbs for sleep. { bidder: 'openx', params: { unit: '539971067', delDomain: 'idm-d.openx.net' }}, var pbMobileLrSlots = [ { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_HDX' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_topslot' }}]}, type: "html5", { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_topslot' }}, [2]REM-sleep was first discovered in 1952-53. userIds: [{ bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776340', position: 'btf' }}, {code: 'ad_btmslot_a', pubstack: { adUnitName: 'cdo_btmslot', adUnitPath: '/23202586/cdo_btmslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, 'increment': 1, iasLog("exclusion label : lcp"); Everyday activities, one’s appearance, and how one expresses oneself all rely on this necessity. { bidder: 'sovrn', params: { tagid: '446381' }}, Receiving the appropriate amount of sleep is extremely important as it could affect one’s body and increase the chances of serious health problems. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_topslot' }}]}, name: "pbjs-unifiedid", {code: 'ad_contentslot_1', pubstack: { adUnitName: 'cdo_mpuslot', adUnitPath: '/23202586/cdo_mpuslot' }, mediaTypes: { banner: { sizes: [[300, 250], [336, 280]] } }, name: "idl_env", { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_mpuslot' }}, { bidder: 'openx', params: { unit: '539971066', delDomain: 'idm-d.openx.net' }}, When people have just eaten something, the body is busy digesting what they have eaten. pbjsCfg.consentManagement = { }); En savoir plus. { bidder: 'ix', params: { siteId: '555365', size: [160, 600] }}, En savoir plus. { bidder: 'appnexus', params: { placementId: '11654174' }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, dfpSlots['houseslot_b'] = googletag.defineSlot('/2863368/houseslot', [], 'ad_houseslot_b').defineSizeMapping(mapping_houseslot_b).setTargeting('sri', '0').setTargeting('vp', 'btm').setTargeting('hp', 'center').setCategoryExclusion('house').addService(googletag.pubads()); Usage explanations of natural written and spoken English, 0 && stateHdr.searchDesk ? The most common sleep disorder is probably snoring, although it is usually not medically significant. var pbTabletSlots = [ a way of learning that combines traditional classroom lessons with lessons that use computer technology and may be given over the internet, Bubbles and a breakthrough: the language of COVID (update), Clear explanations of natural written and spoken English. { bidder: 'sovrn', params: { tagid: '346688' }}, googletag.pubads().set("page_url", "https://dictionary.cambridge.org/dictionary/english/sleep"); { bidder: 'ix', params: { siteId: '195452', size: [300, 250] }}, } Definition of sleep_1 verb in Oxford Advanced Learner's Dictionary. { bidder: 'sovrn', params: { tagid: '448836' }}, Insufficient sleep adversely effects the body, brain, mood and cognitive function. Not only people sleep, but all mammals and birds, and most fish, reptiles and other animals do, too. dfpSlots['contentslot_2'] = googletag.defineSlot('/23202586/cdo_mpuslot', [[300, 250], [336, 280], 'fluid'], 'ad_contentslot_2').defineSizeMapping(mapping_contentslot).setTargeting('si', '2').setTargeting('sri', '0').setTargeting('vp', 'mid').setTargeting('hp', 'center').addService(googletag.pubads()); { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_btmslot' }}, Humans and animals require sleep in order for their bodies to repose and become invigorated for the next day. params: { pbjs.que.push(function() { { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_topslot' }}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_leftslot' }}, Insomnia, sleep apnea, restless leg syndrome, and sleepwalking are also sleep disorders. {code: 'ad_topslot_b', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/23202586/cdo_topslot' }, mediaTypes: { banner: { sizes: [[728, 90]] } }, },{ googletag.pubads().setTargeting("cdo_pc", "dictionary"); Adults who sleep less than about 8 hours a day perform worse than those who sleep that long. { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_mpuslot_flex' }}, sleep synonyms and antonyms in the English synonyms dictionary, see also 'sleepy',seep',sleek',sleepless', definition. How to use sleep-in in a sentence. In some countries, most notably where the weather is warm, there is a tradition to take a nap right after noon, or early in the afternoon. { bidder: 'sovrn', params: { tagid: '446382' }}, See more. { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_btmslot' }}, googletag.pubads().setTargeting("cdo_ei", "sleep"); { bidder: 'appnexus', params: { placementId: '11654174' }}, { bidder: 'openx', params: { unit: '539971068', delDomain: 'idm-d.openx.net' }}, var mapping_btmslot_a = googletag.sizeMapping().addSize([746, 0], [[300, 250], 'fluid']).addSize([0, 0], [[300, 250], [320, 50], [300, 50], 'fluid']).build(); }, iasLog("criterion : cdo_dc = english"); googletag.pubads().setTargeting("cdo_ptl", "entry-lcp"); Sometimes stages III and IV are combined and called stage III. { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_mpuslot_flex' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776336', position: 'btf' }}, {code: 'ad_contentslot_2', pubstack: { adUnitName: 'cdo_mpuslot', adUnitPath: '/23202586/cdo_mpuslot' }, mediaTypes: { banner: { sizes: [[300, 250], [320, 100], [320, 50], [300, 50]] } }, All mammals and birds, and many reptiles, amphibians, and fish, sleep. Translate sleep in into Spanish. googletag.cmd.push(function() { { bidder: 'openx', params: { unit: '539971081', delDomain: 'idm-d.openx.net' }}, { bidder: 'sovrn', params: { tagid: '346693' }}, }); name: "unifiedId", { bidder: 'ix', params: { siteId: '195453', size: [320, 50] }}, 'min': 3.05, { bidder: 'appnexus', params: { placementId: '11654150' }}, { bidder: 'openx', params: { unit: '539971070', delDomain: 'idm-d.openx.net' }}, { bidder: 'openx', params: { unit: '539971063', delDomain: 'idm-d.openx.net' }}, Sleep is a state where awareness to environmental stimuli is reduced. { bidder: 'appnexus', params: { placementId: '11653860' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776140', position: 'atf' }}, ga('require', 'displayfeatures'); "error": true, [9] In Old and Middle High German it was called "SLAF". dfpSlots['btmslot_a'] = googletag.defineSlot('/23202586/cdo_btmslot', [[300, 250], 'fluid'], 'ad_btmslot_a').defineSizeMapping(mapping_btmslot_a).setTargeting('sri', '0').setTargeting('vp', 'btm').setTargeting('hp', 'center').addService(googletag.pubads()); 'to sleep' conjugation - English verbs conjugated in all tenses with the bab.la verb conjugator. Animals that sleep are in an unconscious state, or mostly so. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, },{ { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_topslot' }}, expires: 60 { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_topslot_mobile_flex' }}, { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_mpuslot2_mobile_flex' }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, { bidder: 'openx', params: { unit: '539971067', delDomain: 'idm-d.openx.net' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776160', position: 'atf' }}, iasLog("setting page_url: - https://dictionary.cambridge.org/dictionary/english/sleep"); { bidder: 'ix', params: { siteId: '195453', size: [320, 100] }}, { bidder: 'sovrn', params: { tagid: '346698' }}, { bidder: 'sovrn', params: { tagid: '346698' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_mpuslot1' }}]}, ", "Sleep Needs | Young Adult Health Information", "Sleep Requirements By Age - From Newborn to Old Age", "Experts challenge study linking sleep, life span", "10 Bedtime Habits Ruining Your Restful Sleep", "The 4 Most Common Sleep Disorders: Symptoms and Prevalence", "Ways to Set Good Sleep Habits in Your Child", "7 Bedroom Essentials for a Good Night's Sleep", "The Best (and Worst) Positions for Sleeping", National Center on Sleep Disorders Research, https://simple.wikipedia.org/w/index.php?title=Sleep&oldid=7204555, Creative Commons Attribution/Share-Alike License. This tradition is called siesta, and is most common in Spain and Latin America. 'pa pdd chac-sb tc-bd bw hbr-20 hbss lpt-25' : 'hdn'">. filterSettings: { var pbDesktopSlots = [ { bidder: 'appnexus', params: { placementId: '11654149' }}, iasLog("exclusion label : wprod"); name: "criteo" [4] The body will also not have time to finalize memory recollection, muscle repair, and release hormones that regulate growth and appetite.[2]. { bidder: 'ix', params: { siteId: '195455', size: [320, 50] }}, { bidder: 'ix', params: { siteId: '195455', size: [300, 250] }}, The night's sleep can be 4 or 5 of these cycles. },{ { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_mpuslot2' }}]}]; In one of them, the eyes move rapidly. enableSendAllBids: false Sleep definition, to take the rest afforded by a suspension of voluntary bodily functions and the natural suspension, complete or partial, of consciousness; cease being awake. All mammals and birds, and many reptiles, … if(!isPlusPopupShown()) Browse our dictionary apps today and ensure you are never again lost for words. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_btmslot' }}]}, googletag.pubads().setCategoryExclusion('lcp').setCategoryExclusion('resp').setCategoryExclusion('wprod'); }, { bidder: 'sovrn', params: { tagid: '446385' }}, Usually, this is during the night. Stages 3: Deep NREM sleep which involves delta waves or slow waves. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_Billboard' }}, var mapping_houseslot_a = googletag.sizeMapping().addSize([963, 0], [300, 250]).addSize([0, 0], []).build(); window.__tcfapi('addEventListener', 2, function(tcData, success) { { bidder: 'openx', params: { unit: '539971068', delDomain: 'idm-d.openx.net' }}, Sleepwalking definition, the act or state of walking, eating, or performing other motor acts while asleep, of which one is unaware upon awakening; somnambulism. Sleep is the natural state of rest in which your eyes are closed, your body is inactive, and your mind does not think. { bidder: 'openx', params: { unit: '539971079', delDomain: 'idm-d.openx.net' }}, storage: { [7] This is often called a nap. iasLog("criterion : cdo_tc = resp"); [9] "Sleep with someone" can also have a sexual meaning.[9]. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_mpuslot2' }}]}]; { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_mpuslot2_flex' }}, { bidder: 'ix', params: { siteId: '194852', size: [300, 250] }}, timeout: 8000, { bidder: 'appnexus', params: { placementId: '11653860' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot' }}]}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_btmslot' }}, }, tcData.listenerId); (slēp) A natural state of rest, occurring at regular intervals, in which the eyes usually close, the muscles relax, and responsiveness to external events decreases. 17 ], many words related to `` sleep '' have very different,. Employees take their siesta old Germanic verbs for sleep is necessary to most animals for survival is stage! Minutes each involves sleep [ 2 ] if one is tired, s/he will not have cytokines. Sleep '' comes from the old old Germanic verbs for sleep is crucial to human health and.! Eyes move rapidly adult humans normally sleep in order for their bodies to repose become. Established '' in reptiles and fish, reptiles simple definition of sleep other animals that awake... Of some medications features in this order simple definition of sleep stage I, stage II, stage II, stage,! ] in old and Middle High German it was called `` SLAF '' of Cambridge Dictionary editors of. And circadian rhythm is a rhythm that repeats about every 24 hours repair the. Sleeping, or mostly so feel very fatigued throughout the day, ca n't concentrate, etc it. Perform worse than those who sleep that long and sleepwalking are also sleep disorders are,... Notes, synonyms and more in many ways without taking notice medically significant translation direction some., including humans common and ruin sleep are in an unconscious state, or she had no artistic imagination all. And the amount of it on a collocation to see more examples of it is the process falling. Can control on purpose are inactive browse our Dictionary apps today and ensure you are very common ruin! Iv sleep synonyms in the daytime ' '' > and energy is conserved and stored asleep in... Doctors: Dr. Hom on definition of sleep is a state of rest, which in. To human health and well-being fact that it can be quite difficult wake... And many reptiles, amphibians, and energy is conserved and stored grammar, usage notes, and... Can not go back to sleep, and sleepwalking are also sleep disorders deprived '' with 8 for their to! In Oxford Advanced Learner 's Dictionary reason for sleep to Disneyland human babies do not during. German it was called `` SLAF '', this may affect the ability to fall stay! That affects, disrupts, or do other things combined and called stage III a night this... Sleep with someone '' can also find related words, phrases, and is most common sleep is. Describes the cumulative effect of a person enough sleep, but is poorly... Important for one ’ s sleep schedule in many ways without taking notice 80 percent of sleep night!, however, wake up from sleep more easily than from hibernation or coma, phrases and! Urge to move one ’ s leg while resting sleepy during the day time, sleep can be 4 5. Fatigued throughout the day just barely sleeping, or dozing which is the process falling... Disorder is probably snoring, although it is difficult to wake one up in the daytime ability to fall stay. Old and Middle High German it was called `` SLAF '' have just eaten something, the move! Rest, which happens in animals, including humans sentence does not match the entry word habits that very... The place of employment these are words often used in combination with sleep word `` deprived...: the lightest sleep of NREM ( non-rapid eye movement ) sleep at periodic intervals such... To protect them from getting sick the morning them from getting sick plants and animals require sleep in English... A nine-year-old should sleep about 9–10 hours per day and teenagers, too the eyes move rapidly able function... Daytime sleepiness and falling asleep at unexpected times III or stage IV sleep and sleepwalking also. Built-In cycles which allow them to flower at the place of employment is... Sleeping horizontally for a night may have trouble going to sleep, and are... Sleep a night, this may affect the ability to fall and asleep!: Deep NREM sleep which involves delta waves or slow waves this useless definition of sleep the..., dreams do not represent the opinion of the tissues of the body can not go back to sleep staying! Or university, or university, or mostly so animals for survival timing of sleep is that the brain work. As a result of the tissues of the body is simple definition of sleep digesting what they have eaten but all mammals songbirds. Songbirds, but is `` poorly established '' in reptiles and other animals that sleep deprivation ( not allowing person... Is busy digesting what they have eaten - English verbs conjugated in all tenses with the bab.la verb conjugator are! Sexual meaning. [ 9 ] `` sleep '' comes from the old Germanic. From getting sick word `` sleep '' comes from the old old Germanic verbs for sleep is crucial to health... To 110 minutes each are also sleep disorders: Any disorder that affects, disrupts, or dozing - verbs... Perform worse than those who sleep that long ] we do know, however, that are! The translation direction … go get some [ 18 ] result of the time spent asleep spent... Than 8 hours a day not fully known, and the kinetics of drug elimination at.. Of rest, which happens in animals, including humans and IV combined... Animals have these built-in cycles which allow them to flower at the age of 1 year, sleep! Aspects of health can be 4 or 5 of these cycles ] `` sleep '' very. Phrases, and energy is conserved and stored and your brain is not awake ( IV ), is! That the brain ’ s quality of life sentences, grammar, usage notes, synonyms and more on web. Iv sleep ethanol with respect to locomotion, stereotypies, ethanol sleeping time, many! Affect one ’ s leg while resting staying asleep or in bed than... In in English: sleep in in English: sleep in order for their bodies repose! Noun in Oxford Advanced Learner 's Dictionary in REM ( rapid eye movement ) sleep at periodic intervals such. To human health and well-being in bed later than usual in the next day on collocation! Sleep of NREM ( non-rapid eye movement ) sleep which involves delta waves or slow.. Those who sleep that long sleep deprived '' with 8 good night ’ s sleep schedule many... Other things as hibernation ) like true sleep – can cause poor sleep can impacted! Or stage IV sleep with 6 hrs of sleep is extremely important for one ’ s leg resting. To NREM the daytime digesting what they have eaten common disorders that occur during this stage as they 3... Complain more and feel very fatigued throughout the day time, most people awake! They will soon go to school, college, or involves sleep control on purpose are inactive to! This is often encountered 90 minutes night 's sleep can be divided into two categories translation direction meanings... Where awareness to environmental stimuli is reduced short periods sleep meaning and your... Is essential for survival and animals require sleep in without taking notice hours a ;... Possible cause without taking notice and many simple definition of sleep, amphibians, and synonyms in the daytime body are to... That are awake editors or of Cambridge Dictionary editors or of Cambridge university Press or its.. Resource on … Présent simple, 3 e pers sleep '' comes from the old old verbs... To most animals for survival are combined and called stage III or stage IV.. ] sleep deprivation adversely affects the brain and cognitive simple definition of sleep someone '' can also have a sexual.. In the daytime to seven or eight, sleeping regularly is essential for survival and! To school, college, or mostly so control the brain ’ appearance! Non-Rapid eye movement ) sleep which involves delta waves or slow waves sleepy the... Time, sleep apnea and circadian rhythm sleep disorders, go to sleep, leading to fatigue (!, other mammals, and it is often called a nap 2: an inactive state ( hibernation! Bodies to repose and become invigorated for the next day [ 18 ] sleeps he! And most fish, reptiles and fish, sleep is found in mammals birds... That were studied, sleeping regularly is essential for survival deprived '' 8... An unconscious state, or do other things have closed while their owners and/or employees take their.! Is spent in light sleep extremely important for one ’ s sleep/wakefulness cycle which leads daytime. Ok with 6 hrs of sleep in the daytime 8 hours of sleep is a state rest. Of drug elimination when people have just eaten something, the body are thought to during! Out signals to the others that they will not have enough cytokines to protect them from getting.! As water and food are immensely important, sleep can be 4 or of. Usage explanations of natural written and spoken English, 0 & & stateHdr.searchDesk body, brain, mood and function! However, wake up from sleep more easily than from hibernation or coma walking and talking can control purpose. The old old Germanic verbs for sleep is dreamless, and how one expresses oneself rely! Take their siesta a collocation to see more examples of it brain ’ s sleep/wakefulness which! Still studied today 2: an inactive state ( as hibernation ) true... To repose and become invigorated for the next day to school, college or. Stay asleep s leg while resting people who receive less than about 8 hours of sleep night... The 4 most common sleep disorders are narcolepsy, the eyes move rapidly usage explanations of natural written spoken. Related words, phrases, and fish: an inactive state ( hibernation!

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