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Sleep Patern: NREM & NREM

Sleep Patern: NREM & NREM

1. Non-REM sleep (sometimes called NREM), which includes light and deep sleep, accounts for about the majority of our sleeping time.

2. REM (Rapid Eye Movement) sleep is where we may spend some of our time dreaming. This typically takes place during the last half of our night’s sleep.

While we’re snoozing, we usually go through 4-5 sleep cycles that begin in light NREM sleep and end in REM sleep with each cycle taking between 70 and 120 minutes to complete.

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Sleep Cycle

Sleep Cycle

Sleep is not uniform. Instead, over the course of the night, our total sleep is made up of several rounds of the sleep cycle, which is composed of four individual stages.

In a typical night, a person goes through four to six sleep cycles. Not all sleep cycles are the same l...

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Composition Of Sleep Cycles

Composition Of Sleep Cycles

It is normal for sleep cycles to change as we progress through our nightly sleep. The first sleep cycle is often the shortest, ranging from 70-100 minutes, while later cycles tend to fall between 90 and 120 minutes. In addition, the composition of each cycle — how much time is sp...

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Why?

Why?

This is because as people age, they spend less time in the deep, restful stages of sleep and are more easily awakened. Older people are also more likely to have medical conditions that affect their sleep, such as insomnia, sleep apnoea and heart problems.

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Misconception About Sleep

Misconception About Sleep

One earlier misconception that has now been revised is that the body completely slows down during sleep; it is now dear that the body’s major organs and regulatory systems continue to work actively – the lungs, heart and stomach for example.

Another important part ...

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Another Myth

Another Myth

Our body requires less sleep the older we get.

Whilst, it is true that babies need 16 hours compared to 9 hours and 8 hours respectively for teenagers and adults, this does not mean that older people need less sleep.

However, what is true if that for a number...

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NREM: Sleep Stages Two

NREM: Sleep Stages Two

2. Deep Sleep

  • Stages 3 non-REM sleep – a state of deep and restorative sleep known as slow-wave sleep, or delta sleep. The muscles relax, the supply of blood to the muscles increases, and the body repairs and grows tissue. Hormones are released and energy stores are re...

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757 reads

REM: Fast Facts

REM: Fast Facts

  • During REM sleep, our brain is almost as active as it is when we are awake.
  • In this phase of sleep, breathing can become fast and irregular.
  • REM sleep is thought to help consolidate memories.
  • Drinking alcohol before bed reduces the amount of REM sleep we have.

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NREM: Sleep Stages One

NREM: Sleep Stages One

1. Light Sleep

  • Stage 1 non-REM sleep – a person in this stage is between being awake and asleep or is in a state of very light sleep.
  • Stage 2 non-REM sleep – this stage is characterized by a slightly deeper sleep. Body temperature drops and hea...

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692 reads

Taking A Nap: Sleep Debt

Taking A Nap: Sleep Debt

When we constantly get less sleep (even 1 hour less) than we need each night, it is called sleep debt. We may pay for it in daytime drowsiness, trouble concentrating, moodiness, lower productivity and increased risk of falls and accidents.

Although a daytime nap can...

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Sleep Deprivation

Sleep Deprivation

In a nutshell, sleep deprivation is caused by consistent lack of sleep or reduced quality of sleep. Getting less than 7 hours of sleep on a regular basis can eventually lead to health consequences that affect our entire body.

Some of the side effects of sleep deprivation in...

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Passionate learner and a writer on NovelToon. Ig: @d.angelonico_

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NREM and REM Sleep

NREM and REM Sleep

REM, the Rapid Eye Movement stage of sleep happens when our eyes are moving fast; we are said to be dreaming in that stage.

NREM (Non-Rapid Eye Movement) is the stage of sleep when we are in deep sleep and are not moving. In this stage, our brain is able to clear toxins and con...

We Cycle Through Two Distinct Types Of Sleep

We Cycle Through Two Distinct Types Of Sleep

There are two stages of sleep:

  • Rapid Eye Movement (REM): The brain activity is almost identical to when we’re awake. In this stage, we dream.
  • Non Rapid Eye Movement (NREM): A dreamless sleep. During this stage, we’re calm, relaxed and the heart...

Feel good guide: What normal sleep looks like

Our natural body clock regulates functions through what's known as circadian rhythms: physical, mental and behavioral changes that follow a daily cycle.

Most adults require approximately 7,5-8 hours of good sleep per night. This enables us to spend adequate time in the sta...

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