Sleep Category

Sleep is a naturally recurring state of mind and body, characterized by altered consciousness, relatively inhibited sensory activity, reduced muscle activity and inhibition of nearly all voluntary muscles during rapid eye movement (REM) sleep, and reduced interactions with surroundings. It is distinguished from wakefulness by a decreased ability to react to stimuli, but more reactive than a coma or disorders of consciousness, with sleep displaying different, active brain patterns. Sleep occurs in repeating periods, in which the body alternates between two distinct modes: REM sleep and non-REM sleep. Although REM stands for 'rapid eye movement', this mode of sleep has many other aspects, including virtual paralysis of the body. A well-known feature of sleep is the dream, an experience typically recounted in narrative form, which resembles waking life while in progress, but which usually can later be distinguished as fantasy. During sleep, most of the body's systems are in an anabolic state, helping to restore the immune, nervous, skeletal, and muscular systems, these are vital processes that maintain mood, memory, and cognitive function, and play a large role in the function of the endocrine and immune systems. The internal circadian clock promotes sleep daily at night. The diverse purposes and mechanisms of sleep are the subject of substantial ongoing research. Sleep is a highly conserved behavior across animal evolution. Humans may suffer from various sleep disorders, including dyssomnias such as insomnia, hypersomnia, narcolepsy, and sleep apnea, parasomnias such as sleepwalking and rapid eye movement sleep behavior disorder, bruxism, and circadian rhythm sleep disorders. The use of artificial light has substantially altered humanity's sleep patterns.

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    Quietus Kip Asleep Bedding
    Resolution: 450x236
    Size: 32.58KB
    Downloads: 10
  • Bedtime Rest Kip Hibernate PNG Image
    Bedtime Rest Kip Hibernate
    Resolution: 500x498
    Size: 119.87KB
    Downloads: 20
  • Dormancy Awake Eternal Sleep Doze PNG Image
    Dormancy Awake Eternal Sleep Doze
    Resolution: 900x572
    Size: 151.14KB
    Downloads: 18
  • Bedtime Inactivity Lie Kip PNG Image
    Bedtime Inactivity Lie Kip
    Resolution: 900x707
    Size: 191.46KB
    Downloads: 26
  • Night Eternal Rest Dormancy Nap PNG Image
    Night Eternal Rest Dormancy Nap
    Resolution: 718x633
    Size: 54.57KB
    Downloads: 10
  • Sleepover Hibernate Kiss Quietus PNG Image
    Sleepover Hibernate Kiss Quietus
    Resolution: 1600x1600
    Size: 27.12KB
    Downloads: 23
  • Kiss Doze Lying Night PNG Image
    Kiss Doze Lying Night
    Resolution: 1600x1622
    Size: 113.77KB
    Downloads: 25
  • Quietus Lullaby Bunk Inactivity PNG Image
    Quietus Lullaby Bunk Inactivity
    Resolution: 1684x1179
    Size: 192.79KB
    Downloads: 4
  • Therapy Crib Nap Lullaby PNG Image
    Therapy Crib Nap Lullaby
    Resolution: 960x480
    Size: 144.20KB
    Downloads: 7
  • Eternal Sleep Awake Bunk Hibernation PNG Image
    Eternal Sleep Awake Bunk Hibernation
    Resolution: 640x536
    Size: 362.43KB
    Downloads: 18
  • Rest Slumber Sleeper Eternal Rest PNG Image
    Rest Slumber Sleeper Eternal Rest
    Resolution: 1447x580
    Size: 475.24KB
    Downloads: 3
  • Hibernate Sleepover Doze Rest PNG Image
    Hibernate Sleepover Doze Rest
    Resolution: 960x702
    Size: 147.71KB
    Downloads: 27
  • Dormancy Sleepover Eternal Sleep Nap PNG Image
    Dormancy Sleepover Eternal Sleep Nap
    Resolution: 558x480
    Size: 197.96KB
    Downloads: 21
  • Awake Eternal Rest Bedtime Snooze PNG Image
    Awake Eternal Rest Bedtime Snooze
    Resolution: 1004x795
    Size: 581.79KB
    Downloads: 23
  • Kip Lie Sleeper Snooze PNG Image
    Kip Lie Sleeper Snooze
    Resolution: 650x431
    Size: 206.71KB
    Downloads: 4
  • Quietus Eternal Sleep Inactivity Lie PNG Image
    Quietus Eternal Sleep Inactivity Lie
    Resolution: 400x151
    Size: 67.34KB
    Downloads: 10
  • Insomnia Crib Kip Sleeper PNG Image
    Insomnia Crib Kip Sleeper
    Resolution: 1000x1600
    Size: 948.37KB
    Downloads: 19
  • Eternal Sleep Quietus Eternal Rest PNG Image
    Eternal Sleep Quietus Eternal Rest
    Resolution: 600x900
    Size: 305.90KB
    Downloads: 22
  • Eternal Rest Crib Lie Eternal PNG Image
    Eternal Rest Crib Lie Eternal
    Resolution: 648x1238
    Size: 160.97KB
    Downloads: 16
  • Bed Lullaby Crib Eternal Rest PNG Image
    Bed Lullaby Crib Eternal Rest
    Resolution: 752x1063
    Size: 272.39KB
    Downloads: 16
  • Crib Bedding Insomnia Kip PNG Image
    Crib Bedding Insomnia Kip
    Resolution: 495x337
    Size: 149.86KB
    Downloads: 8
  • Lullaby Hibernation Rest Insomnia PNG Image
    Lullaby Hibernation Rest Insomnia
    Resolution: 500x551
    Size: 255.74KB
    Downloads: 9
  • Sleepover Awake Kip Slumber PNG Image
    Sleepover Awake Kip Slumber
    Resolution: 1225x2003
    Size: 1.97MB
    Downloads: 20
  • Eternal Sleep Rest Awake Inactivity PNG Image
    Eternal Sleep Rest Awake Inactivity
    Resolution: 1186x1353
    Size: 730.09KB
    Downloads: 12
  • Eternal Sleep Doze Bedtime Therapy PNG Image
    Eternal Sleep Doze Bedtime Therapy
    Resolution: 600x796
    Size: 448.27KB
    Downloads: 22
  • Snooze Sleepover Quietus Inactivity PNG Image
    Snooze Sleepover Quietus Inactivity
    Resolution: 779x670
    Size: 419.48KB
    Downloads: 11
  • Nap Bedtime Lying Crib PNG Image
    Nap Bedtime Lying Crib
    Resolution: 800x715
    Size: 227.91KB
    Downloads: 8
  • Sleeper Bunk Lying Kip PNG Image
    Sleeper Bunk Lying Kip
    Resolution: 432x1200
    Size: 537.58KB
    Downloads: 12
  • Lying Bedroom Nap Bed PNG Image
    Lying Bedroom Nap Bed
    Resolution: 1750x1910
    Size: 1.92MB
    Downloads: 23
  • Sleepover Awake Accommodation Doze PNG Image
    Sleepover Awake Accommodation Doze
    Resolution: 476x600
    Size: 177.33KB
    Downloads: 22
  • Kip Accommodation Doze Asleep PNG Image
    Kip Accommodation Doze Asleep
    Resolution: 800x1065
    Size: 858.06KB
    Downloads: 12
  • Bed Slumber Kip Lying PNG Image
    Bed Slumber Kip Lying
    Resolution: 800x1067
    Size: 136.08KB
    Downloads: 8
  • Eternal Rest Snooze Lullaby Insomnia PNG Image
    Eternal Rest Snooze Lullaby Insomnia
    Resolution: 634x720
    Size: 151.83KB
    Downloads: 17
  • Eternal Rest Bedroom Insomnia Lie PNG Image
    Eternal Rest Bedroom Insomnia Lie
    Resolution: 667x548
    Size: 184.53KB
    Downloads: 3
  • Hibernate Kip Insomnia Bed PNG Image
    Hibernate Kip Insomnia Bed
    Resolution: 512x512
    Size: 25.06KB
    Downloads: 15
  • Quietus Bunk Sedation Crib PNG Image
    Quietus Bunk Sedation Crib
    Resolution: 656x767
    Size: 313.70KB
    Downloads: 18
  • Doze Kip Kiss Dormancy PNG Image
    Doze Kip Kiss Dormancy
    Resolution: 555x800
    Size: 411.22KB
    Downloads: 18
  • Nap Awake Sleepover Insomnia PNG Image
    Nap Awake Sleepover Insomnia
    Resolution: 600x469
    Size: 137.52KB
    Downloads: 35
  • Snooze Lullaby Bunk Nap PNG Image
    Snooze Lullaby Bunk Nap
    Resolution: 567x584
    Size: 292.64KB
    Downloads: 10
  • Snooze Eternal Sleep Lullaby Night PNG Image
    Snooze Eternal Sleep Lullaby Night
    Resolution: 415x370
    Size: 48.13KB
    Downloads: 9
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