When you curl up in bed, consider reading an old-fashioned printed book rather than a smartphone or tablet. [qh]
Your sleep should be deeper and more restful. [qh]
That's the finding of a study in the Proceedings of the National Academy of Sciences.[qh]
Researchers had 12 healthy young adults read either a printed book or an iPad for four hours before bed during five consecutive evenings. [qh]
During the fifth night blood samples were collected every hour via an IV during both the reading and sleeping periods. [qh]
The research team assessed sleep time and REM cycles, and the subjects self-rated their sleepiness every evening and morning. [qh]
All participants read for five nights on the iPad and for five from a book.[qh]
As anticipated, reading print made for better Zzzs. [qh]
Participants reading the iPad took about 10 minutes longer to fall asleep, secreted less sleep-inducing melatonin, and shifted their internal circadian clock. [qh]
They also reported feeling more tired the next morning.[qh]
The study's first author, Anne-Marie Chang, then of Boston's Brigham and Women's Hospital, says that devices like the original Kindle, that do not produce their own light, should likely still be a good choice for bedtime reading. [qh]
But when it comes to those backlit gadgets, probably best to read those over your morning coffee.[qh]
1.fall asleep 入睡； 睡着
As we fall asleep the amplitude of brain waves slowly becomes greater.
After changing the bed, I would fall asleep quickly.
2.come to 苏醒；达到；来到
There are thousands of students absolutely gagging to come to this university.
I do hope you'll be able to come to the wedding.