What does it feel like to sleep only 4 hours a day?

It can be very uncomfortable, and sleep has two functions: the first is to eliminate physical fatigue, and the second is to eliminate mental fatigue. Just 4 hours of sleep per night can eliminate physical fatigue, and the time to recover from mental fatigue varies from person to person.

Depressed people are prone to insomnia and take a long time to get rid of mental fatigue, whereas optimistic people can get rid of mental fatigue in just a short time. Studies by British scientists have shown that even if you don't sleep for 1 week, all body functions still work normally.

People who slept for 5 and a half hours did not show any signs of illness after a year, nor did they become tired during the day due to reduced sleep.

Four hours of sleep a day is not enough, and it is generally advisable to sleep about 8 hours a day. It is recommended to have a regular work and rest time. Lack of sleep is prone to produce:

Dark circles, poor hair, greasy or dry hair, acne, abnormal stool, poor resistance and easy to get sick, during the day will be very sleepy, there is no energy to work and study, the biggest wish is to be able to sleep well, quickly supplement the quality of their sleep, the feeling of sleepiness is uncomfortable.

To put it bluntly, you will look old, but you will also become excellent. This kind of excellence is all earned by your own time. The premise of sleeping four hours a day is that it does not have much negative impact on your body, and it will only affect your work efficiency, and it will not affect your life, otherwise even if you sleep for four hours, you will lose more than you gain, especially your physical health, which cannot be exchanged for anything.

This sleep time depends on the individual, everyone's situation is different, as far as the individual is concerned, four hours of sleep is not enough, the next day there will be dark circles, redness and swelling, lack of energy, no energy, brain response is slow, but some people sleep three or four hours a day, and they are still full of energy during the day, but if there are conditions, it is recommended to sleep for six or seven hours.

If you want to have a better memory, or have a better study and work efficiency, you must maintain enough sleep, sleep plays a decisive role in a person's thinking and learning ability, lack of sleep affects people's cognitive process in many ways, lack of sleep can damage people's attention, alertness, concentration, reasoning ability and problem-solving ability, which can lead to your learning efficiency becomes low.

Presumably many people have this feeling, after staying up late, they will feel that their **state is very poor,**sallow,** puffy eyes with a circle of dark circles. This is due to the fact that when you don't get enough sleep, your body releases more of the stress hormone cortisol. Excess cortisol breaks down collagen, which keeps it smooth and elastic.

Deep sleep repairs** tissues.

I just want to say that the human body exists in nature, and it must follow the laws of nature. Especially in the middle of the night, it is an important time for liver and gallbladder detoxification, and if you miss it, it will inevitably accumulate toxins. Another key is the body's immune system.

In fact, life is full of bacteria, and our body's immune system has been resisting and maintaining balance. Sleeping little or irregularly for a long time is a deliberate attempt to destroy the immune system. When the immunity is weakened, all kinds of problems will come to the door.

So, don't trade health for anything, because, it's not worth it, it's not cost-effective at all.

Sleep deprivation is not reaching the normal sleep time. Sleep deprivation can cause many physical and mental damages: decreased ability to think, weakened alertness and judgment, impaired immune function, loss of balance, and so on.

In recent years, experts have identified adequate sleep, a balanced diet and proper exercise as the three pillars of a healthy life.

Sleep is our normal physiological activity, our body gets enough rest when sleeping, and each organ operates, its own role. Let us be able to work energetically the next day, too little sleep every day will cause a great burden on the body, affecting the normal work of various organs of the body.

Normal people should sleep for about seven hours a day, if they have their own good sleep quality, with an adapted rest and rest schedule, they can adjust to about six hours a day, but four hours is really too little, and the body can not get effective rest. We should ensure that the sleep time is two to three hours a day to make our work, study and life not affected, four hours to the eye tracking cycle, to the light sleep time, the deep sleep time is very short, about two sleep cycles, so that the body can not get effective rest will lead to a decline in immunity. The working condition deteriorates.

So we're going to take proper breaks. No matter how busy young people are with their studies, they must ensure normal rest, at least no less than six hours, because the sleep time is too short, the body can not get effective rest, our work, study and life will be very inefficient, and we feel that our brains are chaotic and cannot concentrate on anything?

Sleeping four hours a day is a long-term lack of sleep, which has a certain impact on the body, may affect the normal development of the body, brain thinking, etc., and may also induce diseases, such as upper respiratory tract infection, neurasthenia, etc.

1. Affect the normal development of the body.

In general, the human body secretes auxin during sleep, but less during sleep. If the patient has a long-term lack of sleep, it will affect the normal development of the body.

2. Affect the brain's thinking.

For some people, long-term sleep deprivation may also affect the brain's thinking clarity and brain responsiveness, and it is easy to have inattention, dizziness, memory loss, etc., and some patients may also have headache symptoms.

3. Induce disease.

Lack of sleep will reduce the body's immunity, and it is also prone to anxiety and other bad emotions, which may induce diseases such as upper respiratory tract infections and neurasthenia, and even increase the risk of heart disease, diabetes and other diseases, which need to be paid attention to.

In addition to the above, long-term sleep deprivation may also increase melanin production, affecting metabolism. It is recommended to develop good sleep habits and ensure adequate sleep time to reduce the impact on health and quality of life.

Sleeping four hours a day is sleep deprivation and can affect your health. The human body should get enough sleep, be awake during the day, be alert enough for daily life, and maintain good health, usually adults need 7-9 hours a day to be awake enough the next day. If you don't get enough sleep for a long time, on the one hand, you are prone to accidents, such as fatigue driving, which will cause car accidents.

On the other hand, it may affect the work, and excessive fatigue during work may lead to mistakes.

In addition, health problems are more important, and if you don't get enough sleep, it may weaken the immune system's ability to fight infections, and may also increase the risk of obesity and heart disease. If you don't get enough sleep, you may feel tired, stressed, and uninterested in all the activities you once enjoyed. Therefore, it is important to get enough sleep, and four hours a day is not enough.

Normal people should sleep a stable time of about 7 hours a day, if they have a good sleep quality, with an adaptable schedule, you can adjust it to about 6 hours a day, but 4 hours is really too little, our body can not get effective rest, we sleep every day to ensure that the sleep time is two hours to three hours to make our work, study and life not affected, 4 hours to the eye movement cycle to the light sleep time deep, the sleep time is very short, probably about two sleep cycles, In this way, the body does not get effective rest, which will lead to a decrease in immunity, resulting in a worse state and a worse working state.

When our brain is in the state, it will think with high efficiency, half an hour may be able to complete an hour or two hours of work, but if we use time for a long time to boil, we will find that our brain is in chaos, sometimes we feel that the limbs are not under our control, and the body often appears particularly weak, or even to sweat, which means that our body has a problem. We need to take proper rest, and if the condition is more serious, we should also consult a doctor to recuperate our body.

No matter how busy young people are at work and studying, they still have to ensure normal rest, at least not less than 6 hours, because the sleep time is too short, our body can not get effective rest, our work, study and life will be inefficient, feel that our brain is chaotic, and we can't concentrate on anything.

Not good, it will have a great impact on the body, and even the mental will be affected, which will not save time for your life and work, but will bring greater harm, such as lack of concentration in the stool, decreased immunity, and even lead to dizziness, it is best not to sleep only four hours, you must have enough sleep time, and you must combine work and rest.