睡眠决定寿命 每天睡几个小时可长寿(Sleep determines life and sleeps

睡眠决定寿命每天睡几个小时可长寿（Sleep determines life and sleeps a few hours a day for long life）

Sleep determines life and sleeps a few hours a day for long life

One day must be 8 hours of sleep? According to the American Cancer Society, the average person who sleeps 7~8 hours per night has the longest life expectancy; 80% of people who sleep less than 4 hours a night are short lived. But Guo Xiheng, director of the center for respiratory diseases diagnosis and treatment at Beijing Chaoyang Hospital, also pointed out that the best sleeping time for different age groups is different, and should be scientifically sleep according to their age.

Sleep determines life (picture: Oriental IC)

People over 60: sleep 5.5~7 hours every day

The old should go to bed at 12 every night, and sleep at night for 7 hours, or even 5.5 hours. Alzheimer's association data show that people who sleep within 7 hours of sleep each night can age their brain for 2 years. Long term sleep more than 7 hours or lack of sleep will lead to poor attention, even Alzheimer's disease, increased risk of early death.

Recommendation: the most common sleep problems in the elderly are dreaming and insomnia. Dreaming is due to the deterioration of the brain function of the elderly. Insomnia is caused by the decrease of melatonin secretion in vivo, and melatonin is one of the important factors that determine sleep in vivo. Guo Xiheng suggested that night sleep quality is bad for the elderly,

it is best to develop a lunch break, the time does not exceed 1 hours. Otherwise, the brain central nerve will be more inhibited, causing the brain blood flow is relatively reduced, the body metabolism slowed down, easily lead to wake up uncomfortable, or even more sleepy.

30~60 year old adult: sleeps 7 hours every day or so

Adult men need 6.49 hours of sleep, women need about 7.5 hours, and should ensure that 10 in the evening to 5 in the morning, "high quality sleep time."". Because at this time people reach the state of deep sleep, helps relieve fatigue. The 22 year study in Finland in a study of 21 thousand adults found that sleep less than 7 hours for men, the risk of death was 26% higher than sleep 7~8 hours of male, female 21% higher; sleep more than 8 hours of men, the risk of death was 24% higher than sleep 7~8 hours of male, female 17% higher.

Recommendation: if the person of this age group lacks sleep, it is related to bad habits such as mental deterioration or overeating caused by stress. Guo Xiheng reminds, besides relieving the pressure as far as possible, but also can do something in the sleeping environment, such as reducing noise, ventilation, proper shading, etc., and choose 10~15 cm high, soft and moderate pillows. People who still don't sleep enough can sleep through 1 hours of lunch break. 13~29 year olds: sleep for about 8 hours every day

Teenagers of this age usually need to sleep 8 hours a day, and follow the principle of early to bed and early to rise, and ensure deep sleep at about 3 in the evening. You should usually