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[–] Ricky-Spanish 0 points 1 points (+1|-0) ago 

Maybe someone more knowledgeable than me can chip in here, but It's not the first time I have heard that blue light has an effect on sleep.

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[–] White-Supremacist 0 points 2 points (+2|-0) ago 

Blue light = daylight? Redish/dark = fire/night?