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Lights matters. Our bodies generate a hormone identified as melatonin, which will help you sleep. Gentle slows melatonin production. The greater mild publicity you've, the a lot less melatonin you make, as well as more challenging it may be to drop asleep.?�空機で??��?�オ?�ク?�や?�ン?�ン??��?�に?�い?�、試験で