Question 1: must you sleep 8 hours a day?
So far, the most frequently heard about sleep is "sleep eight hours a day is good for health", according to the relevant experiments have shown that when people sleep than usual short, the mistakes in work will increase, if only sleep 4 hours a day for two weeks, the efficiency will be extremely low.
Experts generally agree that "the proper amount of sleep time varies from person to person, with the effects of physical and age differences, and the need for eight hours of sleep is not to be considered." Adults generally sleep between six and eight hours, and decrease with age.
Not enough sleep, the weekend sleep longer can have certain improvement effect, but if always pull the curtain to be buried deep sleep, don't bask in the sun body clock very easy disorder. So even if you want to sleep on weekends, it's best not to get up too late and get up in the morning at about 9 o 'clock in the morning.
Some myths are healthier
Question 2: can you get enough sleep at noon?
For some people, once in a while, after an all-nighter, a short sleep can restore some energy and prevent inefficiency. But if you don't get enough sleep, not only do you feel sleepy during the day, but you're also vulnerable to high blood pressure, diabetes, depression, etc.
Problem 3: sleeping more is good for skin hairdressing?
There is talk of a "sleeping is beauty sleep, only sleep good, skin is beautiful", some say that it if don't sleep for 10 PM to 2 am, will be difficult to secrete growth hormone in the body, causing various skin problems. Although growth hormone is typically secreted after two to three hours of sleep and deep sleep, there is no evidence that growth hormone secretion is associated with time. So, putting growth hormone together with skin problems says there is a lack of scientific evidence.
Question 4: how much sleep can a child grow?
Besides, there are also claims that "sleep more children grow fast", the experts say: "this is actually a kind of advocate let children sleep fully, is not to say that children sleep much, growth hormone is much taller. There is no necessary link between sleep and height.
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