Have a look you should sleep for a few hours every day

One day must be 8 hours of sleep? USA Anticancer Association survey, the average sleep every night 7~8 hours, the longest life expectancy; average 4 hours of sleep per night following people, 80% is a short life. But the director of Beijing Chaoyang Hospital of sleep respiratory disease treatment center Guo Xiheng also pointed out, different age paragraph the best sleep time is different, should according to their age science of sleep.

People aged 60 years and older: sleep 5.5~7 hours a day The elderly should be at 12 every evening before sleep, sleep in the night time is 7 hours, or even 5.5 hours is enough. The Alzheimer's Association released data show, night sleep restriction in less than 7 hours old, the brain senescence can be delayed for 2 years. While the long-term sleep more than 7 hours or lack of sleep can lead to attention becomes poor, and even the emergence of senile dementia, increase the risk of early death. Night sleep quality is not good man, develop the best nap habits, time is not more than 1 hours. Otherwise, the brain will deepen the central nervous system to inhibit, relatively reduced blood flow to the brain, slow metabolism in vivo, easily lead to wake up in the whole uncomfortable, even more sleepy. Adults: 30 to 60 years old sleeping 7 hours Adult men need 6.49 hours of sleep time, women need 7.5 hours, and should ensure that 5 points at 10 in the evening to the morning "good sleep time". Because people in this easy to reach the state of deep sleep, help to alleviate fatigue. Except as far as possible to ease the pressure, but also in the sleep environment on the work, such as reducing noise, ventilation, proper shading, and select 10~15 cm high, moderate hardness of the pillow. Still not enough sleep person, also by way of sleep 1 hour lunch break. 13 ~ 29 years old young people: sleep 8 hours In this age of teenagers usually need to sleep for 8 hours every day, and must follow the principle of ensuring early, around 3 p.m. into deep sleep. The usual shall ensure that the evening go to bed at 24, as early as 6 a.m., the weekend also try not to sleep late. Because the sleep time is too long, will disrupt the body clock, resulting in low spirits, affect memory, and will miss the breakfast, caused by eating disorders. Therefore, young people are the most important for your own life, not eat anything for 1 hours before going to bag manufacturer sleep, nap for half an hour, more beneficial to the body. Children 4 to 12 years: 10 to 12 hours of sleep a day It is necessary for 12 hours in 4 ~ 10 years old children sleep every day, every night to going to bed at around 8, as far as possible to take a nap at noon. Sleep 10 hours older children, or even 8 hours is enough. If the children lack of sleep, will not only lack of energy, low immunity, also affect the growth and development. But she warned, sleep time is not long, if more than 12 hours, may lead to obesity. 1 ~ 3 years old children: 12 hours a night, two or three hours a day The children every day to ensure 12 hours of sleep a night, the day is it needed to fix two or three hours. The sleep time, can according to their own sleep rhythm and decide, such as some baby used later in the morning and late afternoon the sleep. Suggests that parents in the baby before going to bed 1 hours to give them a warm bath, relax the body; a little story or put some bag factory relaxing, soothing music, but also help to sleep.