As we fall into sleep, our brain stays active and fires into its editing process—deciding which memories to keep and which ones to toss The initial transformation happens quickly The human body does not like to stall between states, lingering in doorways We prefer to be in one realm or another, awake or asleep২৮ আগস্ট, ২০১৮

In the past, sleep was believed to be a passive state The tableau of sleep as it unfolds is anything but a passive process The brain’s activity is as complex as wakefulness, never “resting” during sleep১ মে, ২০০৩

REM sleep tends to combine increased energy provision to the brain and body, and so, this is generally when dreams occur As the name suggests, during REM, your eyes move rapidly from side to side behind closed eyelids and brain wave activity becomes closer to that seen in wakefulness২১ মার্চ, ২০২১

Many biological processes happen during sleep: The brain stores new information and gets rid of toxic waste Nerve cells communicate and reorganize, which supports healthy brain function The body repairs cells, restores energy, and releases molecules like hormones and proteins

Hormones flood your body Melatonin, released by the pineal gland , controls your sleep patterns Levels increase at night time, making you feel sleepy While you’re sleeping, your pituitary gland releases growth hormone, which helps your body to grow and repair itself১৪ মার্চ, ২০১৮

The first part of the cycle is non-REM sleep, which is composed of four stages The first stage comes between being awake and falling asleep The second is light sleep, when heart rate and breathing regulate and body temperature drops The third and fourth stages are deep sleep

A hypnic jerk is an involuntary twitch of one or more muscles that occurs as a person is falling asleep It tends to happen just as the person is transitioning from a wakeful state to a sleeping state Hypnic jerks are a type of involuntary muscle movement called myoclonus১১ মার্চ, ২০১৯

We become less aware of our surroundings and less responsive to outside noise Therefore, we may not “encode” new memories very well during these moments before sleep because we are simply not paying enough attention The brain does not like it when the attention process works too hard before falling sleep৫ ফেব, ২০২০

But a new study by Northwestern University researchers indicates that, depending on what we hear during the night, it is indeed possible to reinforce existing memories and enhance our recall after we wake up Additionally, the researchers measured brain activity during the sleep stage of the experiment২৬ জুন, ২০১২

A single night of poor or diminished sleep can lead to short-term effects, such as daytime tiredness and irritability However, a frequent or consistent lack of sleep may increase the risk of developing longer-term, or chronic, health issues১৪ অক্টোবর, ২০২০

Sleeping for 1 to 2 hours can decrease sleep pressure and make you feel less tired in the morning than you otherwise would by staying up all night If you don’t get enough sleep, you’ll likely experience: poor concentration impaired short-term memory৮ অক্টোবর, ২০২০

Sometimes life calls and we don’t get enough sleep But five hours of sleep out of a 24-hour day isn’t enough, especially in the long term According to a 2018 study of more than people, the body’s ability to function declines if sleep isn’t in the seven- to eight-hour range২৪ মে, ২০১৯

For most people, a short bout of sleep deprivation isn’t a cause for concern But frequent or prolonged sleep deprivation can cause serious health issues Lack of sleep can lead to poor cognitive function, increased inflammation, and reduced immune function২৬ মে, ২০২০

How to survive an all-nighter

1. Take a nap Try to take a power nap in the day or early in the evening to boost your energy and leave you feeling in a better state of mind for your late-night study binge
2. Caffeine – yes or no?
3. Order some pizza in
4. Avoid procrastination
5. Take regular breaks
6. Keep yourself stimulated
7. Set some alarms
8. Do some exercise

After only three or four nights without sleep, you can start to hallucinate Prolonged sleep deprivation can lead to: cognitive impairments

Feeling better after less sleep – including after getting less Deep or REM sleep – could be the result of your body trying to compensate for sleep deprivation When you’re short on sleep, your body releases stress hormones the next day and evening These hormones supply the sensation of alertness২২ আগস্ট, ২০১৬

One of the simplest explanations is that it could be due to your body requiring more rest than the average person However, it is also likely that your tiredness is due to the lack of quality sleep at night, rather than the quantity of it

How to sleep less and have more energy

1. Get some light exercise
2. Avoid screen time for an hour before bed
3. Keep screens and other distractions out of your bedroom
4. Make sure your room is dark
5. Reduce caffeine intake
6. Eat a healthy diet
7. Avoid alcohol
8. Avoid liquids before bed

Polyphasic sleepers can rest 4 to 6 times during a day These sleep combinations are broken down into categories including: Everyman: A long sleep time of around 3 hours with approximately three 20-minute naps throughout the day১৫ সেপ্টেম্বর, ২০১৭

A quick nap can enhance your performance, increase alertness, and improve your mood The key to napping is to keep naps short — 10 to 20 minutes— so you don’t go too far into the sleep cycle, which can actually leave you feeling groggy and more tired than before১৯ মার্চ, ২০১৯