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The back-sleeping position is considered a good one when it comes to keeping your spine aligned and neutral at night, and you’ll want your mattress firmness level to support that. If you don’t know where to start, consider a medium or medium-firm mattress, as research has shown people tend to have less pain from sleeping on these mattresses compared to other firmness levels.
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Иран поразил нефтяной танкер под флагом США у берегов Кувейта14:49
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