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Play iPad in bed affects sleeping

2012-06-12 09:07     Web Editor: Wang Fan comment

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A recent survey by a marketing agency found that 68 percent of tablet owners use the device in the bedroom, more than in any other location. The living room took a close second place, and only some respondents said they use their tablets on the go. ¡¡According to the National Sleep Foundation, 95 percent of Americans use some device, whether it's a TV, laptop, cell phone or other gadget, within an hour of hitting the hay.

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"Artificial light exposure between dusk and the time we go to bed at night ... shifts circadian rhythms to a later hour -- making it more difficult to fall asleep," chief of the division of sleep medicine said.

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One of the most important triggers of sleepiness is darkness, which signals to the brain that it's time to start ramping up production of the sleep-inducing hormone melatonin. As the New York Times points out, any type of light can disturb your slumber, and blue light triggers alertness. The blue wavelength light emitted by cell phones, laptops, tablets and other gadgets is particularly disruptive.

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Instead, experts recommend turning off all devices an hour before bedtime and finding another method for winding down, like reading a book, taking a warm bath or performing a series of calming yoga poses. It's also a good idea to exercise and lay off the caffeine several hours before bedtime.

´ÊÓï×¢ÊÍ£º

Çàíù(q¨©ngl¨¤i)favour

ºÉ¶ûÃÉ(H¨¦ ¨§rm¨¦ng)hormone

Íʺڼ¤ËØ(t¨´n h¨¥i j¨©s¨´)melatonin

(Source: myechinese.com)

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