We spend 1/3 of our lives sleeping. If a person lives to be 78 years old, 26 of those years are spent sleeping. Why do we need such a long sleep time? This is because, after learning and working activities, the human body loses brain function much faster than it recovers, which is reflected in fatigue, yawning, and reduced work capacity.
As an example of the mechanism of brain fatigue, when the brain is active, energy substances such as adenosine triphosphate and high-energy phosphate compounds are broken down and consumed, while synthesis and recovery take place. The trend of these two processes depends on the intensity and duration of cortical functional activity. Synthesis and recovery take place during the high-intensity prolonged cortical time.
The trends of these two processes depend on the intensity and duration of cortical functional activity. High-intensity prolonged cortical time then undergoes protective inhibition. Rest and sleep are both forms of protective inhibition, and if we go to bed too late, it will interfere with the recovery of brain function. Ensuring good rest and sleep is the best way to maintain health. This also explains why the ancients had the saying "not looking for immortal recipes looking for sleeping recipes"
Not only do you need to get enough sleep, but you also need to pay attention to the quality of sleep! The German philosopher Arthur Schopenhauer had this interesting statement: "Sleep is the interest we pay for the capital that we recover at death: the higher the interest rate, the more timely the payment, the later the date of repayment. Once the interest on our sleep is not paid on time or at a sufficient rate, it will be detrimental to our health and we will be closer to recovering the entire capital at death." Sleep is the interest we need to pay to live, and "high-interest rate" can be understood as ensuring sufficient hours, and "paying on time" can be understood as not staying up late, going to bed early and waking up early. In this way, you can postpone the moment when your life ends and your capital is recovered.
We know that the normal sleep time for children is 10 hours, and the average adult should meet eight hours. When the sleep time is insufficient or insomnia, the synthesis and recovery process of the brain will be seriously affected. And the brain is the CPU of a person, once the rest and recovery of the brain are not satiated, problems will occur in all parts of the body.
First, the person's overall immunity will be reduced, making him or her more susceptible to infection or illness.
Secondly, it is especially prone to endocrine disorders, which can lead to cancer, heart disease, diabetes, obesity, etc.
It also harms the digestive system that can easily lead to gastroesophageal reflux and gallbladder disease.
It can also have an impact on the skin condition, making the body more prone to seborrheic dermatitis, and even lead to vision loss.
In addition, in the mental and emotional aspects, people who do not get enough sleep are more likely to be forgetful, tired, agitated, and depressed. Ultimately, when problems occur in all parts of the body, it means a shorter life expectancy.
In addition to adequate sleep time, it is also important to ensure the quality of sleep. The sleep cycle consists of a non-REM cycle and a REM cycle. The non-REM cycle is divided into 4 periods: light sleep, light sleep, middle sleep, and deep sleep. The human night sleep is generally divided into 5 to 6 cycles, each of which lasts about 60 to 90 minutes. The light sleep period and light sleep period, which account for about 55% of the whole sleep time, have little effect on relieving fatigue, while only the middle sleep period, deep sleep period, and rapid eye movement sleep period, which enter the deep sleep state, have a greater effect on relieving fatigue. This is why we say we need to ensure the quality of sleep. As the ancients said, "it is better to take ten pills than to sleep alone for one night".
Nowadays, people live together with their roommates and family members due to various needs. Especially in shared dormitories, many people complain that they live together because of personal differences in work and rest patterns and habits. Especially in shared dormitories, due to personal differences in routine and habits, many people complain that their anxiety and impatience, and take measures to isolate factors that are not conducive to their sleep, such as using earplugs, eye masks, using blackout curtains, etc.
Before going to bed to eat too much, eat spicy, greasy, and sweet, too much water, will increase the burden on the body, the brain rest, but the body is still working overtime, of course, can not rest well.
The wrong time to sleep, the brain has its biological clock, in the night, the pineal gland secretes melatonin to promote sleep, generally at 22:00 to 3:00 am in the peak secretion, if this period there are activities, it will affect the brain rest.
Sleep with excessive dreaming, easy to wake up, shallow sleep, noise interference, anxiety, and depression will reduce the depth and continuity of sleep, also will not let the brain rest
The above reasons will lead to the birth of special "sleepy" households, the root of which is the default of healthy sleep too much!