Sleep
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Sleep Wikipedia ~ 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
Brain Basics Understanding Sleep National Institute of ~ Sleepwake homeostasis keeps track of your need for sleep The homeostatic sleep drive reminds the body to sleep after a certain time and regulates sleep intensity This sleep drive gets stronger every hour you are awake and causes you to sleep longer and more deeply after a period of sleep deprivation
Sleep Disorders Center Types of Sleep Disorders Symptoms ~ The amount of sleep a person needs depends on many things including their age In general Infants ages 03 months need 1417 hours a day Infants ages 411 months need 1215 hours a day
Sleep Disorders Deprivation Disturbance How to Fall ~ Sleep typically occurs in cycles that range from 90 to 120 minutes in length with 4 to 5 cycles occurring during each nights sleep In the first half of the night there is a transition from wakefulness into stage N1 sleep then to stages N2 and N3
Sleep Psychology Today ~ Sleep is the balm that soothes and restores after a long day Sleep is largely driven by the body’s internal clock which takes cues from external elements such as sunlight and temperature
Sleep Definition of Sleep by MerriamWebster ~ Sleep definition is the natural easily reversible periodic state of many living things that is marked by the absence of wakefulness and by the loss of consciousness of ones surroundings is accompanied by a typical body posture such as lying down with the eyes closed the occurrence of dreaming and changes in brain activity and physiological functioning is made up of cycles of nonREM
CDC Sleep Home Page Sleep and Sleep Disorders ~ Sleep and Sleep Disorders A third of US adults report that they usually get less than the recommended amount of sleep Not getting enough sleep is linked with many chronic diseases and conditions—such as type 2 diabetes heart disease obesity and depression—that threaten our nation’s health Not getting enough sleep can lead to motor
