7-8 years old child bedroom, children's high bed and low bed, or children's bed?
The length of sleep is also related to the length of life. A large epidemiological study has shown that too much sleep and too much sleep seem to affect your life span. So, how long does it take for people to sleep at different ages? In general, the newborn sleeps the rest of the day in addition to feeding and changing diapers, and sleeps about 18~22 hours a day; 1~2 year old children sleep 13~14 hours a day;
12 hours of sleep for 2 ~ 4 years old children sleep 11 hours every day; 4 ~ 7 year old children every day; every 7 ~ 15 year old children sleep 9 to 10 hours; 15 to 20 people every day to sleep 8 to 9 hours; adults sleep every day 8 hours; the elderly sleep 5 to 6 hours. Women sleep more than men. However, with the progress of society and the improvement of the living standard, people's life is more and more rich and varied, and the nutritional status and the living conditions of human beings and the environment are constantly improving, people's sleep concept is changing. In the past the kind of "sunrise, sunset and the long sleep lying on the old idea of health benefit is changing, instead of people to health should reduce sleep, sleep, sleep well the new concept of small quantities of high quality. Because in accordance with the laws of nature and regulation of the body, the sleep time is too long, then the depth of sleep will inevitably become shallow; on the contrary, short sleep time, sleep deepened. This means that long sleepers have fewer deep sleep components, while shorter sleepers have more deep sleep components.
Deep sleep is the most important. During deep sleep, the brain can rest fully, growth hormone secretion increases, growth accelerates, and recovery is the best. In addition, short sleep saves a lot of time and develops intelligence. Wine into's is a short sleep, according to his experience, before going to bed to write the manuscript if not finished, then wake up can immediately write down, no need to review the contents of the front, and then continue to clarify ideas. The recovery of the mind does not require long sleep, but a brief sleep can be restored. A company has done a test, called the company in 52 managers (average age 35), let them carry out a series of simple calculation, and then 20 minutes of sleep, wake up again after a series of simple calculation results, compared with before, performance can be increased by 42%. In view of the fact that short sleep is not only time saving, but also beneficial to the development of human health and intelligence, most scholars advocate short sleep rather than long sleep.
