Newborns sleep for a long time, at least 14~ 18 hours a day, so that they can develop their bodies. If children, the normal sleep time is 9~ 10 hour, and adults generally need 8 hours. The sleep time of the elderly will be slightly shortened, and about 5 to 6 hours will be enough. Therefore, how long the normal sleep time is depends on everyone's age.
Second, how to have a healthy sleep
1. The temperature of the sleeping environment is suitable.
The sleeping environment must have a suitable temperature, preferably 18 to 23 degrees. This temperature is neither too cold nor too hot, which is more conducive to deep sleep during sleep and can improve the quality of sleep.
Don't make too much noise when sleeping.
When sleeping, there should be no too much noise around. If there is noise, it will seriously affect brain waves, making people unable to enter deep sleep and directly reducing the quality of sleep. The noise when sleeping can make people feel very tired, and when they wake up, they will be unconscious.
3. Try to choose the correct lateral position.
Try to choose the right position when sleeping, because this position will not oppress the heart, which is more conducive to the blood circulation of the whole body and can help you fall asleep.
4. Keep a regular life
Usually, you must work regularly, get enough sleep, don't stay up late often, and don't stay in bed often. Sleeping too short or too long is not healthy.
5. Don't do strenuous exercise before going to bed.
It is best not to do strenuous exercise before going to bed. You can have more rest, listen to some light music and drink a glass of milk an hour before going to bed. This can promote sleep and improve the quality of sleep. Don't let your mood fluctuate too much before going to bed. Maintaining a stable mood contributes to a healthy sleep.