What are the stages of sleep?

Your sleep cycle-what are the different stages?

Understanding Your Sleep Cycle

Have you ever stopped thinking that a third of your life has passed asleep? Indeed, sleep takes more time each day than any other activity. But what happens while we sleep?

Most people have heard of rem sleep and non-paradoxical. Paradoxical sleep, or sleep with rapid eye movements, is the period in which we dream. The rest of the sleep cycle consists of non-REM sleep.

Non-REM sleep is divided into four necessary steps. We go through these stages throughout the night, each cycle leading to a period of REM sleep. The cycle lasts between 90 and 110 minutes, after which it repeats.

Early in the night, our body needs a deep sleep, which means we spend more of our sleep cycle during the phases of deep sleep. As the night progresses, we are more rested and spend more time in REM sleep.

To understand the stages of sleep, it is essential to know how scientists measure the sleep cycle. The first measurement is made with an electroencephalogram or EEG. The EEG measures brain waves while sleeping. Each stage is characterized by a different pattern of brain waves. The next measure is muscle tone, which is taken with an electromyogram, or EMG. This measures the effect of different stages of sleep on the muscles. Finally, eye movement is measured using an electrooculogram, or EOG.


 When you wake up, your brain is very active. Your brain waves have a high frequency, which means that on a graph they occur close to each other, and of low amplitude, which means that on a chart they are short, without large spikes. Brain waves do not follow a regular pattern but change continuously as you progress through your day. These brain waves are called beta waves.

When you relax, your brain waves become more regular. The amplitude is increasing, and the frequency is slowing down. These brain waves are called Alpha waves.

Step 1

 The first phase of sleep occurs when you go to bed. You enter a relaxing state in which you are mostly asleep, but are always easy to wake up. Your eyes will move slowly as you drift into a semi-conscious state. Sometimes sleepers "start to sleep" when sudden muscle contractions, called hypnetic myoclonus or myoclonic tremors, cause a sensation of falling. As you drift in sleep, your brain waves slow down even more than during relaxation, floating in a slower frequency, a wave of higher amplitude called a theta wave. Stage 1 sleep does not usually last very long.

Step 2

 Sleep stage 2 is more profound than that of step 1. Your eyes stop moving and your brain waves slow. Occasional bursts of rapid brain activity called sleep spindles, and periods of higher wave amplitude, called K-complexes, are typical of Stage 2 sleep. Most brain waves are theta waves in stage 2 sleep. As sleep stage 1, sleep Stage 2 does not last more than a few minutes.

Step 3

As you drift deeper into sleep, your brain will settle into a slow pattern with a high amplitude called Delta waves. It's the beginning of deep sleep. Your body is restful, your eyes are still, and you are deeply asleep. In Stage 3 of sleep, just under 50% of your brain waves are Delta waves, with higher activity peaks between quieter periods.

Step 4

 Like Stage 3, this stage is characterized by the brain activity of the Delta wave. More than 50% of your brain waves are Delta waves, but occasional flashes of higher activity still occur. It is tough to awaken a person from stage 4 sleep. It is interesting to note that it is during Stage 4 sleep that most cases of sleepwalking, night terrors and even night incontinence occur. Stage 4 sleep lasts the longest at the beginning of the night but gradually decreases as the night progresses until it disappears almost early in the morning.


Once the body has moved from the first to the fourth stage of sleep, it will reverse the pattern, returning to the early stage of sleep just before entering paradoxical sleep. As you begin to dream there are many changes in your body. Your breathing becomes rapid and irregular, your eyes start to move, often with jerky movement, and your heart rate becomes high. At the same time, your brain waves become active, much like those you found when you were awake. The body produces a chemical that paralyzes the muscles while you dream, to prevent you from fighting and hurting yourself. This is measured by EMG, which takes a sudden and drastic loss of muscle tone. If you are awake during REM sleep, you will probably remember your dream in detail.

Most people will go through this cycle of sleep stages 3-5 times throughout the night. Early stages do have long periods of REM sleep, but as the night progresses, your stage dream will lengthen. It has been theorized that we use paradoxical sleep to process information taken during the day. It is interesting to note that infants spend 50% of their REM sleep time. As we get older, we need less REM sleep. Adults spend about 20% of the night in rem sleep

Do you want to know how to fall asleep naturally

Do you want to know how to fall asleep naturally?

For many years people are struggling to fall asleep and stay asleep. Some advertisements tell us to put sleeping pills on TV all the time. It is a tempting thought when we have not slept for days. Wait until you call your doctor for sleeping pills. I may have the solution to fall asleep naturally.
When you take sleeping pills, you usually wake up with a sensation of unexpected and Vertigo. If you feel helpless when you wake up, what's the use of taking these pills? You can try different safe and effective methods to help you sleep.
Some persons find it hard to believe that it can help them sleep, but when you are not asleep already, try to try them. An excellent way to fall asleep naturally is to drink tea. Hot tea before bedtime is very relaxing, and you can also drink herbal tea known to help you fall asleep.
Tea at Valerian root, tea with catnip and Chamomile tea are excellent herbal teas to drink before bedtime. Some people prefer not to drink tea. If you are one of them, you can also try hot milk. This has never been explained, but the fact is that it works.
When you drink hot milk, you feel a soothing sensation in your stomach, and I believe it helps us to fall asleep. Caffeine should be avoided before bedtime. Do not smoke, drink sodas or alcohol as this will prevent you from sleeping. Try aromatherapy to help you fall asleep.
Turn on aromatherapy candles around your room before bedtime; make sure to turn them off before you go to bed. A hot bath with aromatherapy oils just before you go to bed is also perfect. To fall asleep naturally, you just need to find a bedtime routine to follow every night that helps you sleep.

Deep sleep light sleep patterns

Deep sleep light sleep patterns

What's the longest you can go without sleep? What happens if you don't sleep? Can you go 48 hours without sleep? So what is the effects of not sleeping for two days? Can I die from lack of sleep? Can a person or human being live longer and survive without sleeping?

What is light sleep?

 Light sleep refers to the type of sleep we are in during the first two stages of nREM sleep. As its name suggests, the light of sleep at the time was very different from a deep sleep, which is the third stage of non-REM sleep. Usually, the first stage of non-REM sleep represents about 3% of our total sleep time.

Our brain does not linger so much at the first stage, as it merely acts as a transition between our waking time and sleeping time. Any light sleep occurs at the 2nd stage of non-REM sleep. It's where most adults spend more than half their nights. For those who ask, "what is light sleep?" these are necessarily the first two stages of our sleep cycle.

What Is Clear Stage Of Sleep

What is light sleep stage-deep sleep vs. light sleep
Some people have asked Reddit not to sleep and what is the difference between deep sleep and light sleep? You have probably heard that people who sleep in the light can wake up in a flash with the most luminous noise, and there are also those who sleep deeply, no matter what noise surrounds them. What's the difference between the two, anyway?

Light sleep

As previously mentioned, this stage of non-REM sleep is the lightest sleep which means you can wake up quickly at this point. The first step is to switch from awake to light sleep, which usually happens in the second stage of non-REM sleep. That's where we spend half our sleep every night. When you are asleep at this stage, you will be able to get to The Awakening Stage easily because your brain has not yet made the transition to deep sleep.

Deep sleep

It is also called delta sleep or slow wave sleep, where we disengage from our environment while we sleep. We need to be in a deep sleep to receive its healing properties. We don't dream that much.

The Light Stage Of Sleep

What happens in a light sleep phase? There are Reddit users who think they don't need to pay much attention to non-REM sleep because all the benefits to our brain and body occur when we enter deep sleep. Researchers say that all stages of sleep play a role in our mind and body, which is why you need to undergo the various stages of sleep to feel stimulated and refreshed.

In the sleep-wake cycle, we first enter the non-REM stage where Stages 1 and 2 is where light sleep occurs. The first stage is the lightest of sleep where it prepares the body to go to a lighter sleep in preparation for deep sleep which is the third stage. The second step is where the sleep spindles occur which are essentially bursts of brain activity.

Light Sleep Patterns

What Is Light Sleep Stage Of Sleep - Deep Sleep And Light Sleep Habits
A good night's sleep is essential to our health and well-being.that's why we have to make sure that we keep our circadian rhythm as much as possible. Although there are some who can sleep light and always wake up feeling refreshed, there are those who need to go through several sleep patterns to get a good night's rest. Let's see how deep and light sleep patterns work.

Non-REM sleep

There are three stages of non-REM sleep that we go through with each step lasting 5 to 15 minutes. Your body will have to go through every level before they reach.REM sleep. The first step can take 5 to 15 minutes when your eyes close, but it's easy to wake up. The second stage is where light sleep begins. Your heart rate slows as your body temperature drops. This means that your brain and body are preparing for deep sleep. This is the third stage where you enter the deep sleep phase. In this phase of REM sleep without REM sleep, it will be difficult to wake up from the bed, but if you manage to wake up, you will probably feel disoriented for a few minutes. It is in the third stage of sleep that a restorative sleep occurs.

REM sleep

Rapid eye movements or REM sleep tend to occur 90 minutes after you enter REM sleep. The first phase of your rem sleep tends to last about 10 minutes. At each stage of sleep, the duration of your REM sleep lengthens. When you are in REM sleep, your heart and breathing speed up.

How much sleep deep compared to light sleep if you get
There are a lot of people who wonder, “how much deep sleep should you buy versus light sleep?" as we have read, deep sleep and REM sleep play a role in our brain and body. This is what we should have for REM sleep and REM sleep.


As mentioned previously, the first step of this non-REM step usually takes 10 minutes as you are still in transition to the sleep phase. When you enter the real non-REM period, your body temperature, as well as your heart rate, will slow down in preparation for a deep sleep which is the third non-REM stage. Most of the time, when we sleep at night, we spend 50% of non-REM, where 20-25% in the deepest non-REM stage. When you're in a deep sleep, brain waves are slow which means there's not much activity or dream happening here. Light sleep often remains in the first two stages non-REM.


After going through the first three stages of the nREM, your body will enter the REM where brain activity will increase. Eye movements will occur at this point because your brain is active while it screens and processes memories and information. You will need to spend 20-25% of your sleep each night at this stage.

Now that you have an idea of how much light and deep sleep you will need each time you go to bed, those who suffer from obstructive sleep apnea, or difficulty breathing at night, you will need to take steps to correct it. The same is true for other age-related macular degeneration if you want to be able to respond to the necessary light and deep sleep to keep your brain functioning, to preserve long-term memory, and your body to stay active and healthy.

Mild Sleep Depression

Sleep depression is as real as the sleep disorders we experience, such as sleep apnea, insomnia, night terrors, etc.according to the American Journal of Epidemiology, sleep quality is affected at night when exposed to light. They added that seniors might have difficulty sleeping at night when there is artificial light. According to Kenji Obayashi, the co-author of the study said that there is a strong link between sleep deprivation and depression, especially in the elderly, because their brains have difficulty slowing down.

Although exposure to light may not be the only reason people feel depressed when they sleep, it may be because exposure to artificial light can disrupt their sleep and brain waves, so they don't get enough rest. And when we lack quality sleep at night, you can expect a variety of health problems to appear, such as Alzheimer's disease, sleep breathing disorders, and others because we don't have enough rest on time.

It seems that exposure to light, while we sleep at night, can trigger changes to our melatonin that affect our body clock. Melatonin is the one that helps our body rest at night. This is why some people find it difficult to fall asleep, even when there is a little artificial light in their room. Obayashi added that even though the elderly are affected by this problem, young people are more likely to suffer from sleep disorders, especially when using their gadgets. Wearing blue-blocking glasses can help reduce tension in the eyes so that they can sleep better at night.

For those who have trouble sleeping because of the depression due to the introduction of artificial light in their bedroom while they sleep, some experts recommend the use of light therapy to correct their body clock. Listening to a sleep podcast can help your brain get into a relaxed state as well.