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  • How Much Deep, Light, and REM Sleep Do You Need? - Healthline
    Deep sleep is essential for health and wellbeing Most adults need around 1 5–2 hours of deep sleep per night The Centers for Disease Control and Prevention (CDC) advise adults aged 18–60
  • Stages of Sleep: What Happens in a Normal Sleep Cycle? - Sleep Foundation
    Stage 2 sleep can last for 10 to 25 minutes during the first sleep cycle, and each N2 stage can become longer during the night Collectively, a person typically spends about half their sleep time in N2 sleep
  • Sleep: How Much You Need and Its 4 Stages - Cleveland Clinic Health . . .
    Sleep is a catch-all that benefits your physical, mental and emotional health When you’re sleeping, your body has the chance to rest and recover — and these restorative properties even occur on a cellular level Some major benefits of sleep include: Boosting your immune system Strengthening your emotional processing
  • What is good sleep and how much do I need? - American Heart Association
    Good sleep benefits your whole body including your heart and brain with effects such as improved mood, memory and reasoning How much sleep do you need? The amount of sleep each person needs will vary, but the National Sleep Foundation recommends at least: 14-17 hours for newborns (0-3 months) 12-15 hours for infants (4-11 months)
  • Sleep cycle stages: Chart, durations, and how to improve sleep
    There are four sleep cycle stages, beginning with light sleep and ending with REM sleep Each stage has a different effect on the body, and each is important for sleep quality
  • How Much Sleep Do You Need? - Sleep Foundation
    Healthy adults need at least seven hours of sleep per night Babies, young children, and teens need even more sleep to enable their growth and development Knowing the general recommendations for how much sleep you need is a first step
  • The Power of the Sleep Cycle - Functional Medical Institute
    For our purposes, it suffices to say that one sleep cycle lasts an average of 90 minutes: 65 minutes of normal, or non-REM (rapid eye movement), sleep; 20 minutes of REM sleep (in which we dream); and a final 5 minutes of non-REM sleep
  • Sleep Calculator
    In order to have good sleep quality, the need to sleep must be balanced against the circadian element of sleep Ideally, the timing of sleep must be balanced such that the maximum concentration of the hormone melatonin and the minimum core body temperature occur after the middle of the sleep episode, and before awakening How much sleep do I need?
  • The 4 Stages of Sleep: What Happens During Each Cycle - Verywell Health
    Stage 3 NREM, also known as deep sleep or slow-wave sleep, is the deepest stage of sleep It is the part of the sleep cycle that allows us to feel refreshed in the morning It is also the stage of sleep during which the body repairs and regenerates tissues and releases certain hormones





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