关于睡眠的十个错误认识，你意识到了吗?(上)

There could be such a thing as too much sleep. The amount of sleep we need varies by person and also changes as we age. Harvard researchers found that a lot of sleep (9 hours or more) is linked with poor sleep quality. So don't aim for more sleep -- even on the weekends. Aim for better sleep.

Alcohol Helps You Sleep

Alcohol, the original nightcap, can help most people fall asleep. However, it also can cause you to wake up more during the night, wrecking your sleep quality. Consider drinking non-alcoholic beer before bed instead.

If You Wake Up in the Middle of the Night, Lie in Bed Until You Eventually Fall Back Asleep

Waking up in the middle of the night is the pits, but it happens to all of us. We all hope to quickly fall back asleep, and so we tend to stay in bed hoping it'll happen any minute now. If that doesn't happen, though, within 15 minutes, most experts recommend getting out of bed to do something that occupies our bodies and brains without overstimulating us. Try not to check the clock either.

Insomniacs Have Difficulty Falling Asleep

Insomnia is a complex sleep disorder. Difficulty falling asleep is just one of its four symptoms. The others, according to the National Sleep Foundation are waking up early and not being able to fall back asleep, waking often, and waking up feeling unrefreshed. There are things you can do to alleviate insomnia and other sleep problems. The best treatment for the long-term usually isn't medication; cognitive behavioral therapy may last longer.

Everyone Should Get 7-8 Hours of Sleep Per Night

Everyone's sleep needs are different, and the quality of your sleep matters more than how much time you spend asleep. That said, the National Sleep Foundation offers recommendations based on age group, from newborns who need 14-17 hours of sleep each day to adults 18-64 who should get 7-9 hours each day, and older adults who should get 7-8 hours each day. Children generally need more sleep. A Jawbone study found that people who sleep 8-9.5 hours each night report happier moods the next day.