Can't you sleep too much? On October 9, Miami Miller University in Florida published a study: people who sleep nine hours a night have a significant decline in memory and language skills, which are the early symptoms of dementia such as Alzheimer's disease.
The study investigated the sleep of 5247 Hispanic Americans aged 45 to 75 for seven years.
The results showed that people who slept 9 hours a night had a comprehensive decline in cognitive ability, learning ability, language fluency and memory.
How long do you sleep every day is best for your body? Tip: quality sleep is not 8 hours
Some elderly people don't need to keep more than 8 hours of high-quality sleep. Just go to bed before 11:00 every night. The elderly should prevent staying up late, because staying up late really does great harm to the human body.
Some people may suffer from insomnia at night, so it is recommended that you should not do some mental things before going to bed at night, and do not play mobile phone sports before going to bed, etc., because these habits may lead to the decline of your sleep quality. Although mobile phone is easy to fascinate people, it will virtually become a helper for you to stay up late, This will also make the nerves excited and cause insomnia.
If you want to improve your sleep quality, you should also pay attention to your eating habits before going to bed, eat more light food, and don't eat spicy or greasy food. Some people may always feel hungry before going to bed. In fact, you are not suitable to eat late night at this time, because traditional Chinese medicine believes that if your stomach is discordant, you will feel restless and uncomfortable, Naturally, your sleep quality will also decline, which will inevitably lead to your habit of staying up late.
1. Generally speaking, newborns sleep no less than 20 hours a day;
2. Infants are about 15 hours old;
3. About 10 hours for school-age children;
4. Adults take about 7-8 hours;
5. The elderly 5 ~ 6 hours.
Therefore, it is not certain to sleep eight hours a day, but the requirements of sleep time are different according to different ages. For those people who often stay up late, you can find that their mood is very unstable, often anxious, angry, etc., and staying up late for a long time is also easy to cause endocrine disorders, which will lead to worse and worse physical quality over time. According to the research, people who often stay up late or have insomnia are also more likely to suffer from depression.
According to the latest research proposal of the American Sleep Foundation: adults aged 18 ~ 64 sleep 7 ~ 9 hours a day, while for the elderly over 65, they sleep 7 ~ 8 hours a day, so we don't have to sleep until 8 hours to wake up. As long as this range is the standard, we believe that our bodies will be healthier and healthier.