The requirement of human body for sleep is that young adults usually sleep 7-9 hours every night, children and adolescents increase 1-3 hours, and the elderly decrease 1-3 hours, which is the requirement of different age groups for sleep amount (time).

Sleep quality: fall asleep within half an hour and basically stay awake all night.

I can fall asleep within half an hour of going to bed, without waking up all night or once, intermittently or early; Don't dream less, don't dream more or have nightmares; Deep sleep is not like sleeping, or it is easily disturbed and awakened by the environment, which is a requirement for sleep quality.

The best sleep time: 10 from night to 6 am.

The best sleep time for human beings should be 10 from night to 6: 00 am, 9: 00 pm to 5: 00 am for the elderly and 8: 00 pm to 6: 00 am for children.

The best sleep time for all ages

Neonatal 20 hours, preschool children 14- 15 hours, pupils 12 hours, middle school students 10 hours, college students 9 hours and adults 8 hours.

6-7 hours for the elderly

Pursue quality, not quantity

Six hours of high-quality sleep gives the human body a better rest than eight hours of low-quality sleep. Strictly control the sleep time within the required range to deepen sleep; Sleeping intermittently for several hours can lead to intermittent shallow sleep. Please don't think you have to lie down for eight hours. If five hours can fully charge you, be grateful. You are a natural short-term sleeper.