Why do people sleep for so long?

About one-third of a person's life is spent in sleep, which shows how important sleep is to everyone. In a sense, the quality of sleep determines the quality of life, and sleep rests the brain and cerebellum. Use "leisure" to repair damaged cells.

Sleep can be divided into two completely different states: one is called fast-wave sleep, and some people call this sleep state REM sleep. As the name suggests, the eyes move very quickly during sleep, and the brain is also very active, and people dream during this period.

The other state is called slow-wave sleep, which is the deepening of the first state, and the sleeper enters a deeper state of unconsciousness. Scientists have found that fast-wave sleep and slow-wave sleep work differently, and the two states also alternate during sleep.

The amount of sleep each person needs depends on a variety of factors, including age. For most adults, 7 to 8 hours a night is the best amount of sleep, although some may sleep less, just 5 hours per night, while others may sleep longer, up to 10 hours a day. If a person has missed sleep in the first few days, then the amount of sleep he or she needs will also increase.

Sleeping too little can lead to a "sleep debt," like an overdraft in the bank, and eventually, your body will demand that the debt be repaid. We don't seem to be able to adjust to sleeping less than we need to, and even though we may be used to a daily routine that reduces sleep, our judgment, reflexes, and other faculties are still weakened.

Sleep disorders can be detrimental to one's health, or cause confusion, frustration, frustration, and other emotions.

Sleep and health are closely related, and poor sleep can lead to disruptions in bodily functions, such as stroke and asthma, which often occur at night or in the early hours of the morning, which may be caused by changes in hormones, heart rate, and other properties related to sleep.

Sleep is the brain's self-recovery mechanism, alternating between deep sleep and light sleep, increasing the flow of cellular fluid between brain neurons, taking away metabolic waste products, and storing information from daytime life to different brain regions responsible for long-term and short-term memory.

Only sleep can make you forget many sad things and relieve the stress from life.

That's because some people have very good sleep quality and fall asleep very easily, but some people are prone to insomnia.

Some people have too much on their minds, often cranky, or lack of qi and blood, which will lead to poor sleep, so we must adjust our mentality before going to bed, and you can also soak your feet in hot water or drink a glass of warm milk, which will improve the quality of sleep.

Here's why:1. Sleep is very important to the human body, and about 1 3 times of a person's life are spent in sleep. If you don't sleep, it will obviously damage your health, mainly because the process of sleep is a process in which the body is resting and metabolizing.

2. The neurons of the cerebral cortex must be well rested. The muscles, liver, and kidneys of the body also need to get rest. This rest time can remove a large amount of toxins from the body and carry out metabolism, which is very important for the human body.

Sleep itself can also increase some plasticity of brain synapses, and it also plays a very important role in improving patients' memory and intelligence.

3. In addition, patients with long-term insomnia will have obvious clinical manifestations such as decreased concentration, lack of concentration, and decreased learning work efficiency, and may even induce cardiovascular and cerebrovascular diseases.

The amount of sleep a person needs per day is genetically determined, and a normal adult needs 7-9 hours of sleep a day to keep themselves energized.