Exposing preschoolers to an hour of bright light before bedtime is not a good idea, according to new 欧美口爆视频 Boulder study. It disrupts their sleep patterns, almost completely shuts down their production of the sleep-promoting hormone melatonin, keeping it suppressed for at least 50 minutes after light鈥檚 out, says lead author Lameese Akacem with the Sleep and Development Laboratory at 欧美口爆视频 Boulder.
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