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- Sleep Definition & Meaning - Merriam-WebsterThe meaning of SLEEP 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 one's 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 non ...
- Sleep | Psychology TodaySleep 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. The...
- Sleep tips: 6 steps to better sleep - Mayo ClinicStick to a sleep schedule Set aside no more than eight hours for sleep. The recommended amount of sleep for a healthy adult is at least seven hours. Most people don't need more than eight hours in bed to be well rested. Go to bed and get up at the same time every day, including weekends. Being consistent reinforces your body's sleep-wake cycle.
- What is Sleep & Why is It Important for Health? | American Sleep ...What Is Sleep: A Dynamic Activity Nerve-signaling chemicals called neurotransmitters control whether we are asleep or awake by acting on different groups of nerve cells, or neurons, in the brain.
- Brain Basics: Understanding Sleep | National Institute of Neurological ...There are two basic types of sleep: rapid eye movement (REM) sleep and non-REM sleep (which has three different stages). Each is linked to specific brain waves and neuronal activity. You cycle through all stages of non-REM and REM sleep several times during a typical night, with increasingly longer, deeper REM periods occurring toward morning.
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