Older people over 60 years old: sleep 5.5~7 hours a day. Old people should go to bed before 12 every night. Sleep for 7 hours or even 5.5 hours at night is enough.
Adults aged 30 ~ 60: Sleep about 7 hours a day. Adult men need 6.49 hours of sleep time, and women need about 7.5 hours, and should ensure "quality sleep time" from 10 to 5 am.
13 ~ 29 years old young people: sleep for about 8 hours every day. Teenagers of this age usually need to sleep for 8 hours every day. They should follow the principle of going to bed early and getting up early to ensure a deep sleep around 3 pm.
Children aged 4 ~ 12: sleep 10 ~ 12 hours every day. It is necessary for children aged 4 ~ 10 to sleep 12 hours every day, go to bed around 8 o'clock every night, and try to take a nap at noon. Older children sleep 10 hours, or even 8 hours is enough.
1 ~ 3 years old children: every night 12 hours, two or three hours during the day. Children should ensure 12 hours of sleep every night and need to make up for two or three hours during the day.
/kloc-infants under 0/year: every day 1 6 hours. Babies under/kloc-0 need sleep time most, about 1 6 hours a day.