How long does a person need to sleep? Different age groups are different. The most common sleep demand of adults is 7-8 hours. Generally speaking, newborns sleep no less than 20 hours a day; The baby is about 15 hours; School-age children are about 10 hour; 8 hours for adults; 5 ~ 6 hours for the elderly.
According to the China Sleep Index Report, in 20 15 years, the average daily sleep time of China people is 8 hours 12 minutes, which sounds like a long time. However, there are still 55.9% people in China who say they don't get enough sleep, and 48.6% people still feel sleepy after getting up.
Extended data
Scientific research shows that the best sleep time is 2 1 to 5: 00 the next day. In real life, it is recommended to go to bed before 22: 30, go to bed at 23: 00 and get up at around 7: 30 the next day.
This is because the human body produces energy during the day (5: 00-2 1) and starts cell division at night (2 1- 5:00 the next day) to convert energy into new cells. It's time for human cells to recuperate and innovate. That is, people rotate with the earth to the side facing away from the sun, and the yin is quiet, which is a good time for people to sleep. Only by resting at this time can they have a good state of mind and body.
People's Network-The best time to fall asleep: at night 1 1, beware of five kinds of insomnia.